cleanup: simplify deprecated indication a little

[brody4hire]

Platforms affected

all

Motivation and Context

updated:

From a regex used in PR #853 to test this functionality, I think it would be nice to simplify this a little.

Description

Simplify the code a little to show a deprecated platform in a form like this (made-up example):

wp7 4.5.6 - deprecated

Testing

• [x] update test cases from PR #853

Checklist

• [ ] I've run the tests to see all new and existing tests pass
• ~~I added automated test coverage as appropriate for this change~~
• ~~Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))~~
• ~~If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)~~
• ~~I've updated the documentation if necessary~~