add Tenant ID documentation

Author: bkeller108

docs/Images/manual_register_app_web_6.png

@@ -51,24 +51,28 @@ This guide provides detailed steps to manually register both front-end and backe
 - Click **Add** and remember to copy and store the secret value securely as it will not be shown again
 ![manual_register_app_web_3](./Images/manual_register_app_web_3.png)
 
+### 3. Get Tenant ID
+- Go to **Tenant Properties** in [Azure Portal](https://portal.azure.com)
+- Copy the Tenant ID (will be used in next step)
+
+![manual_register_app_web_6](./Images/manual_register_app_web_6.png)
+
 ### 4. Set Up Authentication in Web Container App
 
 - Go to your Web Container App
 - Go to **Authentication**
 - Click **Add Identity Provider**
 - Choose **Microsoft**
 - Input:
-- **Client ID**: The Application (client) ID from the app registration
-- **Client Secret**: The secret value you generated in Certificates & Secrets from the app registration
-- **Issuer URL**: `https://sts.windows.net/<tenant_id>/v2.0`
-- **Allowed Token Audiences**: Usually the Application ID URI or Client ID
+  - **Client ID**: The Application (client) ID from the app registration
+  - **Client Secret**: The secret value you generated in Certificates & Secrets from the app registration
+  - **Issuer URL**: `https://sts.windows.net/<tenant_id>/v2.0`
+  - **Allowed Token Audiences**: Usually the Application ID URI or Client ID
 - Click **Add**  
 
 ![manual_register_app_web_4](./Images/manual_register_app_web_4.png)
 
 
-
-
 ## Step 2: Register API Application
 
 ### 1. Create App Registration