!wiki: give link to main page if no arguments are provided, catch timeout errors

src/wolfgame.py

@@ -6591,7 +6591,17 @@ def get_help(cli, rnick, chan, rest):
 @cmd("wiki", pm=True)
 def wiki(cli, nick, chan, rest):
     """Prints information on roles from the wiki."""
+
+    # no arguments, just print a link to the wiki
+    if not rest:
+        cli.msg(chan, "https://github.com/lykoss/lykos/wiki")
+        return
+
+    try:
         page = urllib.request.urlopen("https://raw.githubusercontent.com/wiki/lykoss/lykos/Home.md", timeout=2).read().decode('ascii', errors='replace')
+    except urllib.error.URLError:
+        cli.notice(nick, "Request to https://github.com/lykoss/lykos/wiki timed out.")
+        return
     if not page:
         cli.notice(nick, "Could not open https://github.com/lykoss/lykos/wiki")
         return