Update README.md

Author: Thinh Nguyen

README.md

@@ -11,7 +11,7 @@ This modular pipeline element can be flexibly attached downstream
 to any particular design of experiment session, thus assembling a fully functional 
 ephys pipeline.
 
-For background and development progess, see [here](./Background.md).
+See [Background](Background.md) for the background information and development timeline.
 
 ## The Pipeline Architecture