Fixed a couple Optional errors

src/Discord.Net/API/Optional.cs

@@ -9,7 +9,7 @@ namespace Discord.API
     {
         private readonly T _value;
 
-        /// <summary> Gets the value for this paramter, or default(T) if unspecified. </summary>
+        /// <summary> Gets the value for this paramter. </summary>
         public T Value
         {
             get
@@ -22,8 +22,6 @@ namespace Discord.API
         /// <summary> Returns true if this value has been specified. </summary>
         public bool IsSpecified { get; }
 
-        object IOptional.Value => _value;
-
         /// <summary> Creates a new Parameter with the provided value. </summary>
         public Optional(T value)
         {
@@ -40,12 +38,14 @@ namespace Discord.API
             if (other == null) return false;
             return _value.Equals(other);
         }
-
         public override int GetHashCode() => IsSpecified ? _value.GetHashCode() : 0;
+
         public override string ToString() => IsSpecified ? _value?.ToString() : null;
         private string DebuggerDisplay => IsSpecified ? _value.ToString() : "<unspecified>";
 
         public static implicit operator Optional<T>(T value) => new Optional<T>(value);
         public static explicit operator T(Optional<T> value) => value.Value;
+
+        object IOptional.Value => Value;
     }
 }