Update metadata.yml with correct URL

Change-Id: I967ae1ba18b7493e25744d855be7512d3bfc07a0
diff --git a/metadata.yml b/metadata.yml
index 0731bfa..1d14c52 100644
--- a/metadata.yml
+++ b/metadata.yml
@@ -1,3 +1,3 @@
 name: "glusterfs"
 version: "2017.3"
-source: "https://github.com/tcpcloud/salt-formula-glusterfs"
+source: "https://github.com/salt-formulas/salt-formula-glusterfs"