Replace bazel-genfiles with bazel-bin in documentation

Bug: Issue 11757
Change-Id: Id301f395b3b52dd1766af39c678a93b9c5e70dfa

README.md

diff --git a/README.md b/README.md
index 3289410..77f5d21 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@
 The output is created in
 
 ```
-  bazel-genfiles/plugins/gitblit/gitblit.jar
+  bazel-bin/plugins/gitblit/gitblit.jar
 ```
 
 This project can be imported into the Eclipse IDE.