fix Readme (#8)

Co-authored-by: Mukesh Rana <mukeshr@Admins-MacBook-Pro.local>

Author: mukesh-lt

README.md

@@ -98,8 +98,13 @@ You can generate capabilities for your test requirements with the help of our in
 **Step 5:** You would need to execute the below command in your terminal/cmd.
 
 ```bash
-python google-search-lambdatest.py
+python lambdatest.py
 ```
+For python3 use
+```bash
+python3 lambdatest.py
+```
+
 Your test results would be displayed on the test console (or command-line interface if you are using terminal/cmd) and on LambdaTest automation dashboard.