Update azure_app_service_auth_setup.md

Spelling Mistake "idenity" → should be "identity" and "sucessfully" → should be "successfully"

Author: Atulku-Microsoft

documentation/azure_app_service_auth_setup.md

@@ -18,7 +18,7 @@
 
 ![Add Provider](./images/azure-app-service-auth-setup/AppAuthIdentityProviderAdd.png)
 
-5. Accept the default values and click on `Add` button to go back to the previous page with the idenity provider added.
+5. Accept the default values and click on `Add` button to go back to the previous page with the identity provider added.
 
 ![Add Provider](./images/azure-app-service-auth-setup/AppAuthIdentityProviderAdded.png)
 
@@ -40,7 +40,7 @@
 
 ![Add Details](./images/azure-app-service-auth-setup/AddDetails.png)
 
-5. After application is created sucessfully, then click on `Add a Redirect URL`.
+5. After application is created successfully, then click on `Add a Redirect URL`.
 
 ![Redirect URL](./images/azure-app-service-auth-setup/AddRedirectURL.png)