Update README.rst
diff --git a/README.rst b/README.rst
index 7461ea7..fef633c 100644
--- a/README.rst
+++ b/README.rst
@@ -23,7 +23,7 @@
 =============
 
 Documentation covering the original version is in the doc directory.
-See the `README-extensions.rst` file for documentation on the extentions.
+See the [README-extensions.rst](./README-extensions.rst) file for documentation on the extentions.