docs(git-provider): Document Remove-GitRepoRegistration

docs/GitRepositoryRegistration.md

@@ -82,4 +82,41 @@ PS C:/>
 
 ## Remove-GitRepoRegistration
 
-`Remove-GitRepoRegistration [-Name string]`
+`Remove-GitRepoRegistration [-Name string]`
+
+Removes a repo registration by the given name, or if no name is specified, attempts to remove the git repo registered by resolving the git repo.
+
+If `Name` is not provided then the command must be run in a location that is a git repo and the registration to remove will use the parent git repo folder name. If `Name` _is_ provided this command can be executed from any location.
+
+```pwsh
+# Default registration without a name within a folder in a git repo
+PS D:/Repos/Project-a> New-GitRepoRegistration
+
+# List registrations
+PS D:/Repos/Project-a> Get-GitRepoRegistration
+
+Name         Location              CurrentBranch
+----         --------              -------------
+Project-a    D:/Repos/Project-a    main
+Test-Repo    D:/Repos/Project-a    main
+
+# Remove a registration from within a git repo
+PS D:/Repos/Project-a> Remove-GitRepoRegistration
+# No output indicates successful removal
+
+PS D:/Repos/Project-a> Get-GitRepoRegistration
+
+Name         Location              CurrentBranch
+----         --------              -------------
+Test-Repo    D:/Repos/Project-a    main
+
+# Duplicate calls error if there is no registration
+PS D:/Repos/Project-a> Remove-GitRepoRegistration
+Remove-GitRepoRegistration: No registration exists for 'Project-a'.
+
+# Debug output via named argument
+PS D:/Repos/Project-a> Remove-GitRepoRegistration -name Test-Repo -debug
+DEBUG: Checking if current directory is a git repository...
+DEBUG: ...location is a git repo!
+DEBUG: Removed Test-Repo.
+```