Changed @since 6.2 -> @since 6.2.0

Comment From: pivotal-cla

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Comment From: pivotal-cla

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Comment From: snicoll

@immanuellukwago I am not sure what led you to change this. If you look in the codebase, you'll see that we use X.Y format for majors. Also, we have a checkstyle rule to validate this and your change makes the build fail.