* Move PesterDoAndDont.md into WritingPesterTests.md
* Add powershell language moniker to codesnippets
in WritingPesterTests.md
Add extra new-lines for formatting
* Adding here-string info to testings docs
* Remove PR template, update guidelines for PR
* Update testing-guidelines.md
* Add clarification on when to use runtime/compiletime checks
* Update issue label descriptions
Changing OPS to PowerShell.
Changing "PowerShell in Windows" to "Windows PowerShell".
Removing a duplicate line "test/powershell/Modules/Microsoft.PowerShell.Security".
Fixing a bunch of typos.