Change update github path to action secrets (#441)

docs/03-github/02-activation.mdx

@@ -43,7 +43,7 @@ Follow these steps if you are using a free version of Unity.
    > get the ulf from the platform that is most convenient to you. For example, using Windows to
    > activate your license and building on Ubuntu on Github is perfectly fine.
 
-5. Open `Github` > `<Your repository>` > `Settings` > `Secrets`.
+5. Open `Github` > `<Your repository>` > `Settings` > `Secrets and Variables` > `Actions`.
 6. Create the following secrets;
    - `UNITY_LICENSE` - _(Copy the contents of your license file into here)_
    - `UNITY_EMAIL` - _(Add the email address that you use to login to Unity)_