doc: fix link

Author: dshemetov

docs/epidata_development.md

@@ -49,7 +49,7 @@ $ [sudo] make test pdb=1
 $ [sudo] make test test=repos/delphi/delphi-epidata/integrations/acquisition
 ```
 
-You can read the commands executed by the Makefile [here](dev/local/Makefile).
+You can read the commands executed by the Makefile [here](../dev/local/Makefile).
 
 ## Rapid Iteration and Bind Mounts