Fix the reference link

Change-Id: I520eee6464cf57e575ac00169fda0d40169d7ebb
diff --git a/pronto_deployment_guide/bootstrapping.rst b/pronto_deployment_guide/bootstrapping.rst
index b89db55..08d0977 100644
--- a/pronto_deployment_guide/bootstrapping.rst
+++ b/pronto_deployment_guide/bootstrapping.rst
@@ -53,6 +53,8 @@
    $ cd $WORKDIR
    $ git clone "ssh://[username]@gerrit.opencord.org:29418/aether-pod-configs"
 
+.. _update_global_resource:
+
 Update global resource maps
 ---------------------------
 Add a new ACE information at the end of the following global resource maps.
@@ -154,10 +156,11 @@
 .. code-block:: shell
 
    $ cd $WORKDIR/aether-pod-configs/tools
-   $ vi ace_env
+   $ cp ace_env /tmp/ace_env
+   $ vi /tmp/ace_env
    # Set environment variables
 
-   $ source ace_env
+   $ source /tmp/ace_env
    $ make vpn
    Created ../production/ace-test
    Created ../production/ace-test/main.tf