Updated mediawiki/extensions
Project: mediawiki/extensions/ApiExplorer  540266cf9b1ca2482ea9f02ea72f780cf241e948

Replacing deprecated wfMsg* functions.

Replaced deprecated wfMsg* functions with wfMessage.

Change-Id: I2c14e63a9ff84009aa5540c0685254d9aa8eb2e1
Signed-off-by: Bill Traynor <btraynor@gmail.com>