Merge pull request rails#21450 from amitsuroliya/minor_typo

typo fix [ci skip]

Author: kaspth

guides/source/contributing_to_ruby_on_rails.md

@@ -16,7 +16,7 @@ After reading this guide, you will know:
 Ruby on Rails is not "someone else's framework." Over the years, hundreds of people have contributed to Ruby on Rails ranging from a single character to massive architectural changes or significant documentation - all with the goal of making Ruby on Rails better for everyone. Even if you don't feel up to writing code or documentation yet, there are a variety of other ways that you can contribute, from reporting issues to testing patches.
 
 As mentioned in [Rails
-README](https://github.com/rails/rails/blob/master/README.md), everyone interacting in Rails and its sub-project’s codebases, issue trackers, chat rooms, and mailing lists is expected to follow the Rails [code of conduct](https://github.com/rails/rails/blob/master/CODE_OF_CONDUCT.md).
+README](https://github.com/rails/rails/blob/master/README.md), everyone interacting in Rails and its sub-projects' codebases, issue trackers, chat rooms, and mailing lists is expected to follow the Rails [code of conduct](https://github.com/rails/rails/blob/master/CODE_OF_CONDUCT.md).
 
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