Merge pull request #14 from githubtraining/rename-default

Rename master to main

Author: brianamarie

README.md

@@ -14,9 +14,9 @@ For more information on the goals of this course, check out the [`course-details
 
 ## Contribute
 
-See something we could improve? Check out the contributing guide in the [community contributors repository](https://github.com/githubtraining/community-contributors/blob/master/CONTRIBUTING.md) for more information on the types of contributions we :heart: and instructions.
+See something we could improve? Check out the contributing guide in the [community contributors repository](https://github.com/githubtraining/community-contributors/blob/main/CONTRIBUTING.md) for more information on the types of contributions we :heart: and instructions.
 
-We :heart: our community and take great care to ensure it is fun, safe and rewarding. Please review our [Code of Conduct](https://github.com/githubtraining/community-contributors/blob/master/CODE_OF_CONDUCT.md) for community expectations and guidelines for reporting concerns.
+We :heart: our community and take great care to ensure it is fun, safe and rewarding. Please review our [Code of Conduct](https://github.com/githubtraining/community-contributors/blob/main/CODE_OF_CONDUCT.md) for community expectations and guidelines for reporting concerns.
 
 ## License