Improved example in int.framework intro

docs/guides/int_framework/samples/intro/autocomplete.cs

@@ -1,9 +1,17 @@
 [AutocompleteCommand("parameter_name", "command_name")]
 public async Task Autocomplete()
 {
-    IEnumerable<AutocompleteResult> results;
+    IEnumerable<AutocompleteResult> results = new[] 
+    { 
+        new AutocompleteResult("Name1", "value1"), 
+        new AutocompleteResult("Name2", "value2") 
+    };
 
-    ...
-
-    await (Context.Interaction as SocketAutocompleteInteraction).RespondAsync(results);
+        // max - 25 suggestions at a time
+    await (Context.Interaction as SocketAutocompleteInteraction).RespondAsync(results.Take(25));
 }
+
+// you need to add `Autocomplete` attribute before parameter to add autocompletion to it
+[SlashCommand("command_name", "command_description")]
+public async Task ExampleCommand([Summary("parameter_name"), Autocomplete] string parameterWithAutocompletion)
+    => await RespondAsync($"Your choice: {parameterWithAutocompletion}");