remove reference to README.developers

This reference was project specific and too generic.

Author: mseeber

developers.md

@@ -15,13 +15,11 @@ project.
 
 ## Found a bug?
 
-Send your report to the respective bugtrackers of
+Send your report to the respective bug-trackers of
 [jack1](https://github.com/jackaudio/jack1) or
 [jack2](https://github.com/jackaudio/jack2) or send your report to the
 [mailing list](/community).
 
-Starting to develop? Don't forget to read README.developers.
-
 Is there an error in this web site? General comments? Send the webmaster an
 email.