Update CONTRIBUTING.md
Update CONTRIBUTING.md

Very minor changes (3 commas).
Lines: 5, 41, and 62
First ever involvement in an open source project, just wanted to get my foot in the door.
bocops/open-location-code,zongweil/open-location-code,zongweil/open-location-code,bocops/open-location-code,zongweil/open-location-code,bocops/open-location-code,zongweil/open-location-code,bocops/open-location-code,zongweil/open-location-code,google/open-location-code,google/open-location-code,google/open-location-code,bocops/open-location-code,google/open-location-code,zongweil/open-location-code,google/open-location-code,zongweil/open-location-code,google/open-location-code,bocops/open-location-code,bocops/open-location-code,google/open-location-code,zongweil/open-location-code,bocops/open-location-code,google/open-location-code,google/open-location-code,zongweil/open-location-code,bocops/open-location-code,google/open-location-code,zongweil/open-location-code,zongweil/open-location-code,bocops/open-location-code,bocops/open-location-code,google/open-location-code