Fix Good First Issues url (#8465)

Author: mbelsky

README.md

@@ -203,9 +203,9 @@ Facebook has adopted a Code of Conduct that we expect project participants to ad
 
 Read our [contributing guide](CONTRIBUTING.md) to learn about our development process, how to propose bugfixes and improvements, and how to build and test your changes to Jest.
 
-### [Good First Issues](https://github.com/facebook/jest/labels/%3Awave%3A%20Good%20First%20Issue)
+### [Good First Issues](https://github.com/facebook/jest/labels/good%20first%20issue)
 
-To help you get your feet wet and get you familiar with our contribution process, we have a list of [good first issues](https://github.com/facebook/jest/labels/%3Awave%3A%20Good%20First%20Issue) that contain bugs which have a relatively limited scope. This is a great place to get started.
+To help you get your feet wet and get you familiar with our contribution process, we have a list of [good first issues](https://github.com/facebook/jest/labels/good%20first%20issue) that contain bugs which have a relatively limited scope. This is a great place to get started.
 
 ## Credits