Fixing master to main in binder launch

Author: raghukiran1224

README.md

@@ -74,7 +74,7 @@ You can try out some of CodeFlare features using the My Binder service.
 
 Click on a link below to try CodeFlare, on a sandbox environment, without having to install anything.
 
-[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/project-codeflare/codeflare.git/master)
+[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/project-codeflare/codeflare.git/main)
 
 #### Instaling locally
 
@@ -118,4 +118,4 @@ Go to [CodeFlare on IBM Code Engine](./deploy/ibm_cloud_code_engine) for detaile
 
 ## Contributing
 
-If you are interested in joining us and make CodeFlare better, we encourage you to take a look at our [Contributing](CONTRIBUTING.md) page.
+If you are interested in joining us and make CodeFlare better, we encourage you to take a look at our [Contributing](CONTRIBUTING.md) page.