Unparsed -> Remainder in example.

docs/guides/samples/module.cs

@@ -7,7 +7,7 @@ public class Info : ModuleBase
 {
     // ~say hello -> hello
     [Command("say"), Summary("Echos a message.")]
-    public async Task Say([Unparsed, Summary("The text to echo")] string echo)
+    public async Task Say([Remainder, Summary("The text to echo")] string echo)
     {
         // ReplyAsync is a method on ModuleBase
         await ReplyAsync(echo);
@@ -39,4 +39,4 @@ public class Sample : ModuleBase
         var userInfo = user ?? Context.Client.CurrentUser;
         await ReplyAsync($"{userInfo.Username}#{userInfo.Discriminator}");
     }
-}
+}