Updated mediawiki/extensions
Project: mediawiki/extensions/VectorBeta  94499e0ce0c0418adb1ba4bace7f0cf147bdbae3

Add horizontal scroll to pre elements (where required)

On pages where `pre` elements have a lot of content, it breaks
the layout and the content overflows out of the gray box.

Example - https://en.wikipedia.org/wiki/User:Prtksxna/test.js

Change-Id: I4af1625ed2ed4ca7a5a7f4bd416107b49be1b4b0