Thread:CzechOut/@comment-44341818-20200527124308/@comment-44807868-20200528130712

It's because there isn't supposed to be a colon ( ) in the beginning of  ; and the underscores ( ) don't effect anything but they can be left out, too.

Hence, the correct usage would be  . However, to link to the homepage of the Spanish wiki, simply   will suffice, too; and vice versa,   will suffice for linking English wiki homepage on Spanish wiki.

If you've further questions about it, it'd be better to take it on my wall rather than here!