Fixed the link for the required env variables for the client.

README.md

@@ -91,7 +91,7 @@ SENDGRID_API_KEY="<api_key>"
 LOGIN_PAGE_URL="<login_page"
 ```
 
-3.  In the `Docker` directory, create a `client.env` file with the [required environtmental variables](#env-vars-cllient) for the client. Sample file:
+3.  In the `Docker` directory, create a `client.env` file with the [required environtmental variables](#env-vars-client) for the client. Sample file:
 
 ```
 VITE_APP_API_BASE_URL="http://localhost:5000/api/v1"