Fix URL to point to the right version of javadocs

Author: renner

README.md

@@ -3,7 +3,7 @@
 
 # salt-netapi-client
 
-Java bindings for the [Salt API](http://docs.saltstack.com/en/latest/ref/netapi/all/salt.netapi.rest_cherrypy.html#module-salt.netapi.rest_cherrypy.app), please have a look at the Javadoc for [v0.15.0](http://suse.github.io/salt-netapi-client/docs/v0.14.0) or [master](http://suse.github.io/salt-netapi-client/docs/master).
+Java bindings for the [Salt API](http://docs.saltstack.com/en/latest/ref/netapi/all/salt.netapi.rest_cherrypy.html#module-salt.netapi.rest_cherrypy.app), please have a look at the Javadoc for [v0.15.0](http://suse.github.io/salt-netapi-client/docs/v0.15.0) or [master](http://suse.github.io/salt-netapi-client/docs/master).
 
 ## How to use it