Update README.md
fixing the reference to external licenses in the readme file
@@ -32,7 +32,7 @@ Contact us
Licensing and legal issues
--------------------------
OpenRefine is open source software and is licensed under the BSD license
-located in the [LICENSE.txt](LICENSE.txt). See that file also for information on open source
+located in the [LICENSE.txt](LICENSE.txt). See the folder `licenses` for information on open source
libraries that OpenRefine depends on.
Credits
