Change "WG" to "team"

As far as I can tell, node-addon-api does not fall under the
responsibility of any working group.

Author: tniessen

README.md

@@ -174,7 +174,7 @@ See [CONTRIBUTING.md](CONTRIBUTING.md) for more details on our philosophy around
 
 <a name="contributors"></a>
 
-## WG Members / Collaborators
+## Team members
 
 ### Active
 | Name                | GitHub Link                                           |