Approved extensions must not be GPL

docs/extensiondev.rst

@@ -302,12 +302,11 @@ extension to be approved you have to follow these guidelines:
     -   it must be possible to use the factory pattern for creating
         applications.
 
-4.  The license has to be BSD/MIT/WTFPL licensed unless a depending
-    library absolutely enforces GPL or another license.
+4.  The license must be BSD/MIT/WTFPL licensed.
 5.  The naming scheme for official extensions is *Flask-ExtensionName* or
     *ExtensionName-Flask*.
 6.  Approved extensions must define all their dependencies in the
-    `setup.py` file unless a dependency cannot by met because it is not
+    `setup.py` file unless a dependency cannot be met because it is not
     available on PyPI.
 7.  The extension must have documentation that uses one of the two Flask
     themes for Sphinx documentation.