Update adopters file with entry for Microsoft internal teams

[pperrier27]

PR Summary

Update the adopters file with an entry for internal Microsoft teams.

PR Checklist

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• Summarized changes
• Change is not breaking
• Make sure all .cs, .ps1 and .psm1 files have the correct copyright header
• Make sure you've added a new test if existing tests do not effectively test the code changed and/or updated documentation
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[bergmeister]

Hmm, that is kind of what every company, including mine does and what the main use case of PSSA is.
I think adopters is more for people who actually ship or use PSSA as part of their product. WDYT @SteveL-MSFT

[SteveL-MSFT]

@bergmeister I think any company using PSSA in production and willing to advertise that should be in adopters. If it's only for products that ship/use PSSA, it would be a very short list. Looking at other OSS projects with Adopters.md, it's not just for products.

[bergmeister]

Suggested change

	* Microsoft internal: teams within Microsoft use Powershell Script Analyzer to maintain and improve the quality of the Powershell code they write.
	* Microsoft internal: Teams within Microsoft use Powershell Script Analyzer to maintain and improve the quality of the Powershell code they write.