Updated mediawiki/extensions
Project: mediawiki/extensions/Echo  a769340ba755841420ea390e0eabed5ad7173cf4

QA: add modern assertions to flyout tests

"Then" steps should always contains RSpec assertions. In the
past this meant using some version of the word "should", but
the modern convention in RSpec is to use "expect()" as I
did here.

Change-Id: I1c438a310803e29c0985328a76d2ec08578e0cb0