Merge pull request #4059 from brainwane/license-link

Update link to license in philosophy document

Author: RichardLitt

docs/open-source-philosophy.rst

@@ -2,7 +2,7 @@ Read the Docs Open Source Philosophy
 -------------------------------------
 
 Read the Docs is Open Source software.
-We have `licensed <https://github.com/rtfd/readthedocs.org/blob/master/LICENSE.mit>`_ the code base as MIT,
+We have `licensed <https://github.com/rtfd/readthedocs.org/blob/master/LICENSE>`_ the code base as MIT,
 which provides almost no restrictions on the use of the code.
 
 However,