fix: use relative path for markdown link in create_new_app_registration.md

Author: AjitPadhi-Microsoft

docs/create_new_app_registration.md

@@ -28,7 +28,7 @@
 
 ![Web](images/Web.png)
 
-8. Enter the `web app URL` (Provide the app service name in place of XXXX) and Save. Then go back to [Set Up Authentication in Azure App Service](/docs/azure_app_service_auth_setup.md) Step 1 page and follow from _Point 4_ choose `Pick an existing app registration in this directory` from the Add an Identity Provider page and provide the newly registered App Name.
+8. Enter the `web app URL` (Provide the app service name in place of XXXX) and Save. Then go back to [Set Up Authentication in Azure App Service](azure_app_service_auth_setup.md) Step 1 page and follow from _Point 4_ choose `Pick an existing app registration in this directory` from the Add an Identity Provider page and provide the newly registered App Name.
 
 E.g. <<https://<< appservicename >>.azurewebsites.net/.auth/login/aad/callback>>