Fixed how scrubbing of pings in location information is handled

+ instead of putting a zero width unicode character, escape the `@`

GeoffreyBot/geoffrey_formatter.py

@@ -11,7 +11,7 @@ def format_message(msg_format, *args):
         for char in chars_to_escape:
             arg = arg.replace(char, "\\" + char)
 
-        arg = re.sub(r"@(?!\s)", "@\u200B", arg)
+        arg = re.sub(r"@(?!\s)", "\@", arg)
         string_format_args.append(arg)
 
     msg = msg_format.format(*string_format_args)