Wrong documentation for new requireMatchingCoordinates rules

There is a copy-paste error in https://github.com/apache/maven-enforcer/blob/f8430efe20020071273bab883cffb3a2e0f00107/enforcer-rules/src/site/apt/requireMatchingCoordinates.apt.vm#L65, where the closing tag does not match the opening tag.

See https://maven.apache.org/enforcer/enforcer-rules/requireMatchingCoordinates.html line 19 for the result.