Fix build documentation

Change-Id: Ib7d0aa60fa4583134a5d6b78ed59c8ada8d2ad37
Signed-off-by: Jorge Ruesga <j.ruesga.criado@gmail.com>

src/main/resources/Documentation/build.md

diff --git a/src/main/resources/Documentation/build.md b/src/main/resources/Documentation/build.md
index 1bc2410..04029fb 100644
--- a/src/main/resources/Documentation/build.md
+++ b/src/main/resources/Documentation/build.md
@@ -13,7 +13,7 @@
   cd gerrit
   git submodule init
   git submodule update
-  git clone https://gerrit.googlesource.com/plugins/cloud-notifications
+  git clone https://gerrit.googlesource.com/plugins/cloud-notifications plugins/cloud-notifications
   buck build plugins/cloud-notifications
 ```