Refs #9521 Textarea: update Manual.rst. Update FormEditor to 80,1,350.

Name Stage Failure
failed
snapshot Build
Error: Call to undefined method IMATHUZH\Qfq\Core\Helper\HelperFormElement::textareaAutoHeight()

/home/gitlab-runner/builds/z2S3Mwv6/0/typo3/qfq/typo3conf/ext/qfq/Tests/Unit/Core/Helper/HelperFormElementTest.php:206

ERRORS!
Tests: 345, Assertions: 2007, Errors: 1.
Makefile:109: recipe for target 'phpunit' failed
make: *** [phpunit] Error 2
ERROR: Job failed: exit status 1