[BUGFIX] Unify line endings in ext-lang-am.js

The ext-lang-am.js now has unique linux linebreaks.
Before it had a mixture of windows and linux linebreaks.

Change-Id: I4f74677c66611e2ca2143cf249934cb69b5e5ea5
Resolves: #78871
Relates: #77808
Releases: master, 7.6
Reviewed-on: https://review.typo3.org/50867


Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>