Update doc comments based on feedback

src/Discord.Net.Rest/Entities/AuditLogs/DataTypes/ChannelCreateAuditLogData.cs

@@ -80,6 +80,7 @@ namespace Discord.Rest
         /// <returns>
         ///     An <see cref="Int32"/> representing the time in seconds required before the user can send another
         ///     message; <c>0</c> if disabled.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public int? SlowModeInterval { get; }
         /// <summary>
@@ -87,6 +88,7 @@ namespace Discord.Rest
         /// </summary>
         /// <returns>
         ///     <c>true</c> if the created channel has the NSFW flag enabled; otherwise <c>false</c>.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public bool? IsNsfw { get; }
         /// <summary>
@@ -95,6 +97,7 @@ namespace Discord.Rest
         /// <returns>
         ///     An <see cref="Int32"/> representing the bit-rate (bps) that the created voice channel defines and requests the
         ///     client(s) to use.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public int? Bitrate { get; }
         /// <summary>

src/Discord.Net.Rest/Entities/AuditLogs/DataTypes/ChannelDeleteAuditLogData.cs

@@ -73,6 +73,7 @@ namespace Discord.Rest
         /// <returns>
         ///     An <see cref="Int32"/> representing the time in seconds required before the user can send another
         ///     message; <c>0</c> if disabled.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public int? SlowModeInterval { get; }
         /// <summary>
@@ -80,14 +81,15 @@ namespace Discord.Rest
         /// </summary>
         /// <returns>
         ///     <c>true</c> if this channel had the NSFW flag enabled; otherwise <c>false</c>.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public bool? IsNsfw { get; }
         /// <summary>
         ///     Gets the bit-rate of this channel if applicable.
         /// </summary>
         /// <returns>
-        ///     An <see cref="Int32"/> representing the bit-rate set of the voice channel; <c>null</c> if not
-        ///     applicable.
+        ///     An <see cref="Int32"/> representing the bit-rate set of the voice channel.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public int? Bitrate { get; }
         /// <summary>

src/Discord.Net.Rest/Entities/AuditLogs/DataTypes/ChannelInfo.cs

@@ -34,6 +34,7 @@ namespace Discord.Rest
         /// <returns>
         ///     An <see cref="Int32"/> representing the time in seconds required before the user can send another
         ///     message; <c>0</c> if disabled.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public int? SlowModeInterval { get; }
         /// <summary>
@@ -41,14 +42,15 @@ namespace Discord.Rest
         /// </summary>
         /// <returns>
         ///     <c>true</c> if this channel has the NSFW flag enabled; otherwise <c>false</c>.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public bool? IsNsfw { get; }
         /// <summary>
         ///     Gets the bit-rate of this channel if applicable.
         /// </summary>
         /// <returns>
-        ///     An <see cref="System.Int32"/> representing the bit-rate set for the voice channel; <c>null</c> if not
-        ///     applicable.
+        ///     An <see cref="Int32"/> representing the bit-rate set for the voice channel;
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public int? Bitrate { get; }
     }

src/Discord.Net.Rest/Entities/AuditLogs/DataTypes/GuildInfo.cs

@@ -32,11 +32,16 @@ namespace Discord.Rest
         /// <returns>
         ///     An <see cref="int"/> representing the amount of time in seconds for a user to be marked as inactive
         ///     and moved into the AFK voice channel.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public int? AfkTimeout { get; }
         /// <summary>
         ///     Gets the default message notifications for users who haven't explicitly set their notification settings.
         /// </summary>
+        /// <returns>
+        ///     The default message notifications setting of this guild.
+        ///     <c>null</c> if this is not mentioned in this entry.
+        /// </returns>
         public DefaultMessageNotifications? DefaultMessageNotifications { get; }
         /// <summary>
         ///     Gets the ID of the AFK voice channel for this guild.
@@ -69,6 +74,7 @@ namespace Discord.Rest
         /// </summary>
         /// <returns>
         ///     The level of requirements.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public VerificationLevel? VerificationLevel { get; }
         /// <summary>
@@ -84,6 +90,7 @@ namespace Discord.Rest
         /// </summary>
         /// <returns>
         ///     The level of MFA requirement.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public MfaLevel? MfaLevel { get; }
         /// <summary>
@@ -94,11 +101,11 @@ namespace Discord.Rest
         /// </returns>
         public ExplicitContentFilterLevel? ExplicitContentFilter { get; }
         /// <summary>
-        ///     Gets the ID of the channel where randomized welcome messages are sent.
+        ///     Gets the ID of the channel where system messages are sent.
         /// </summary>
         /// <returns>
-        ///     A <see cref="ulong"/> representing the snowflake identifier of the system channel where randomized
-        ///     welcome messages are sent; <c>null</c> if none is set.
+        ///     A <see cref="ulong"/> representing the snowflake identifier of the channel where system
+        ///     messages are sent; <c>null</c> if none is set.
         /// </returns>
         public ulong? SystemChannelId { get; }
         /// <summary>
@@ -114,6 +121,7 @@ namespace Discord.Rest
         /// </summary>
         /// <returns>
         ///     <c>true</c> if this guild can be embedded via widgets; otherwise <c>false</c>.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public bool? IsEmbeddable { get; }
     }

src/Discord.Net.Rest/Entities/AuditLogs/DataTypes/MemberInfo.cs

@@ -25,6 +25,7 @@ namespace Discord.Rest
         /// <returns>
         ///     <c>true</c> if the updated member is deafened (i.e. not permitted to listen to or speak to others) by the guild;
         ///     otherwise <c>false</c>.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public bool? Deaf { get; }
         /// <summary>
@@ -33,6 +34,7 @@ namespace Discord.Rest
         /// </summary>
         /// <returns>
         ///     <c>true</c> if the updated member is muted by the guild; otherwise <c>false</c>.
+        ///     <c>null</c> if this is not mentioned in this entry.
         /// </returns>
         public bool? Mute { get; }
     }