Issue #3054510 by greggles, Spokje, bas123, fchandler, effulgentsia, Wim...

Issue #3054510 by greggles, Spokje, bas123, fchandler, effulgentsia, Wim Leers, mr.baileys, patchman-jelmerverkleij: Make a minor docs improvement to NormalizerBase.php in order for Patchman to see it as a newer version than it was prior to SA-CORE-2019-003

(cherry picked from commit 6366c555)