Change Settings to Preferences in Mac

CONTRIBUTING.md

@@ -23,7 +23,7 @@ First, you need a Captain instance running in debug mode, this can be a remote s
 or your local machine itself. Needless to say, Docker is required (same minimum version as mentioned in README)
 
 > Docker for Mac users: You need to add `/captain` to shared paths.  
-> To do so, click on the Docker icon -> Setting -> File Sharing and add `/captain`
+> To do so, click on the Docker icon -> Preferences -> File Sharing and add `/captain`
 
 Log in to your machine, clone the git repo, go to `app-backend` directory and run the following lines: