DM the user their deleted message

As a courtesy, we'll DM the user the message that was deleted, that way
they aren't upset that they'll have to retype their message.

Author: Headline

IRC-Relay/Program.cs

@@ -116,6 +116,12 @@ await messageParam.Channel.SendMessageAsync(messageParam.Author.Mention + ": Too
                     " code blocks, please use \\`\\`\\` to open & close the codeblock."  +
                     "\nYour message has been deleted and was not relayed to IRC. Please try again.");
                 await messageParam.DeleteAsync();
+
+                await messageParam.Author.SendMessageAsync("To prevent you from having to re-type your message,"
+                    + " here's what you tried to send: \n ```"
+                    + messageParam.Content
+                    + "```");
+                
                 return;
             }