Fix double parsing of the 'description' key in Special:Version.

$description is parseInline()'d right after the if-else loop, on line 682.

Follow-up to 357eb3d488b9d8caf575bc6990d9906ecc256554.

Change-Id: I9ad4f5cedc590e5abef269363998457d828fd574
Merge "Fix double parsing of the 'description' key in Special:Version."