docs(auth): fix links to repository in README.md

Fix links at the `README.md` files
of the gitlab auth provider and microsoft auth provider.

Additionally, the wrong provider name was used at auth-backend
within code documentation related to the microsoft provider.

Signed-off-by: Patrick Jungermann <Patrick.Jungermann@gmail.com>

.changeset/forty-monkeys-lay.md

@@ -0,0 +1,6 @@
+---
+'@backstage/plugin-auth-backend-module-microsoft-provider': patch
+'@backstage/plugin-auth-backend-module-gitlab-provider': patch
+---
+
+Fix link to the repository in `README.md`.

plugins/auth-backend-module-gitlab-provider/README.md

@@ -4,5 +4,5 @@ This module provides an GitLab auth provider implementation for `@backstage/plug
 
 ## Links
 
-- [Repository](https://gitlab.com/backstage/backstage/tree/master/plugins/auth-backend-module-gitlab-provider)
+- [Repository](https://github.com/backstage/backstage/tree/master/plugins/auth-backend-module-gitlab-provider)
 - [Backstage Project Homepage](https://backstage.io)

plugins/auth-backend-module-microsoft-provider/README.md

@@ -1,8 +1,8 @@
 # Auth Module: Microsoft Provider
 
-This module provides an Microsoft auth provider implementation for `@backstage/plugin-auth-backend`.
+This module provides a Microsoft auth provider implementation for `@backstage/plugin-auth-backend`.
 
 ## Links
 
-- [Repository](https://gitlab.com/backstage/backstage/tree/master/plugins/auth-backend-module-microsoft-provider)
+- [Repository](https://github.com/backstage/backstage/tree/master/plugins/auth-backend-module-microsoft-provider)
 - [Backstage Project Homepage](https://backstage.io)

plugins/auth-backend/src/providers/microsoft/provider.ts

@@ -32,7 +32,7 @@ import {
 } from '@backstage/plugin-auth-backend-module-microsoft-provider';
 
 /**
- * Auth provider integration for GitLab auth
+ * Auth provider integration for Microsoft auth
  *
  * @public
  */