[BUG] mgmt eng, inappropriate update of changelog/readme.md

[XiaofeiCao]

• [AutoPR azure-resourcemanager-containerregistry-tasks]-generated-from-SDK Generation - Java-5780623 #47769
• Cause for changelog maybe the regex when updating changelog version. Not sure about the readme.md for now..

[XiaofeiCao]

• Another PR: [AutoPR azure-resourcemanager-resources-deploymentstacks]-generated-from-SDK Generation - Java-5803514 #47817