SpringBoot Use the term "uber jar" in reference documentation and javadoc

The term "uber jar" seems to be a more popular than "far jar", we should update our reference documentation and javadoc.

Comment From: bottlerocketjonny

Hi! Can I work on this issue please? Looking to make my first contribution :)

Comment From: philwebb

Thanks for the offer @bottlerocketjonny, but I already had a commit lined up for this one.

Comment From: bottlerocketjonny

Thanks for the offer @bottlerocketjonny, but I already had a commit lined up for this one.

No worries at all! I'm on the lookout for good first issues to get to grips with the codebase. Let me know if you spot anything and I'll be happy to help :)