Improve example on app yamls to avoid confusion on versioning

[RealAnna]

this doc and this one confuse users since they use X.Y and X.Y.Z format to refer to versions of app and workloads. We need for the examples to stress out that there is no correlation between app version and workload version and that anything can be used as a version i.e. latest, myvers12.5, my_v24

[hirentimbadiya]

@RealAnna, In first doc we can update the application manifest (app.yaml) to remove the version numbers from the workload definitions and mention that version strings can be any arbitrary value.
In second doc we can update the "Synopsis" section to clarify that the version strings for workloads can be any string and not just X.Y.Z format.

I would like to work on this and open to your suggestions, can you please assign me this issue.

[RealAnna]

@hirentimbadiya yes this is good, and maybe add a "latest" in the second file? I will assign you 🚀