[RELEASE-NOTES] Fix typo
* typo: mw.util.getScript should be mw.util.wikiScript, it was and is not named mw.util.getScript
* Introduced in
r88513 under 1-19 "New features"
*
r92328 merged it to 1-18 under "Bugs fixed"
* Now typo fixed and moved (back) to "New features"