Remove outdated, accidentally-copied reference to PRS from code comment

src/bos/server/controllers/utils.py

@@ -35,7 +35,7 @@ def url_for(endpoint, **values):
     """Calculate the URL for an endpoint
 
     This wraps flask.url_for. flask.url_for doesn't generate the path that we
-    need when PRS is running on a path behind a proxy. For example, if the app
+    need when BOS is running on a path behind a proxy. For example, if the app
     is proxied on `/apis/bos` and the client made a request like
     `/apis/bos/v1`, flask.url_for('repositories') would return
     `/v1/repositories` which wouldn't be valid because it's missing the path