Update path to documentation in readme (brianc#2925)

Author: brianc

README.md

@@ -23,7 +23,7 @@ Each package in this repo should have its own readme more focused on how to deve
 
 ### :star: [Documentation](https://node-postgres.com) :star:
 
-The source repo for the documentation is https://github.com/brianc/node-postgres-docs.
+The source repo for the documentation is available for contribution [here](https://github.com/brianc/node-postgres/tree/master/docs).
 
 ### Features