Updated mediawiki/extensions
Project: mediawiki/extensions/Parsoid  746e6886a177878c768fc55a6e2e9d6b5d4bc8ce

Images: link parameter should handle external URLs correctly.

Note that there was a missing / in the previously-failing parsoid-only
parser tests which I also had to fix.

Bug: 49293
Change-Id: I28c2aa925806236de129fff6c8e73e3e51bcc927