update copy for contributing

Signed-off-by: huongg <[email protected]>

CONTRIBUTING.md

@@ -328,11 +328,11 @@ If the lower-bound e2e test fails, it indicates that some dependencies may not w
 **2. It will open the gitpod workspace automatically**
 <img width="1792" alt="Screenshot 2024-04-17 at 15 57 41" src="https://github.com/kedro-org/kedro-viz/assets/32060364/9aea0174-858a-4ebc-9c62-ee90b28c921f">
 
-**3. Please wait until both FE and BE are done with their build. You can check it by clicking on `frontend` and `backend`. This can take around 5 minutes to fully finish**
+**3. Please wait until the frontend and backend builds are successful. You can check it by clicking on `frontend` and `backend` tabs in the terminal. (Estimated build time : 5 minutes)**
 <img width="1455" alt="Screenshot 2024-04-17 at 15 59 46" src="https://github.com/kedro-org/kedro-viz/assets/32060364/ae080672-4a48-4178-b83e-70274071497f">
 <img width="1456" alt="Screenshot 2024-04-17 at 16 04 38" src="https://github.com/kedro-org/kedro-viz/assets/32060364/af60ea0a-6148-4354-938e-3a0ef7b9e711">
 
-**4. Final step is to ensure that you unblock the pop-up ads in the browser, then refresh the browser again. It should then build the kedro-viz in gitpod workspace**
+**4. Unblock pop-up ads and refresh your browser. Kedro-Viz should be running on your gitpod workspace**
 <img width="1432" alt="Screenshot 2024-04-17 at 16 06 05" src="https://github.com/kedro-org/kedro-viz/assets/32060364/53dd56c2-df5e-49a6-ba06-9846af7bab52">
 
 # Release guidelines