Merge pull request #420 from api-platform/replace-race

Replace the "race" word in the code of conduct

Author: dunglas

extra/conduct.md

@@ -8,7 +8,7 @@ documentation, submitting pull requests or patches, and other activities.
 We are committed to making participation in this project a harassment-free
 experience for everyone, regardless of level of experience, gender, gender
 identity and expression, sexual orientation, disability, personal appearance,
-body size, race, ethnicity, age, religion, or nationality.
+body size, ethnic group, ethnicity, age, religion, or nationality.
 
 Examples of unacceptable behavior by participants include: