Add instuctions to remove the existing edge

Change-Id: I6091996f46e928f7f7b1342bb5f0637d28564b5e
diff --git a/conf.py b/conf.py
index ac6a99e..8cc3070 100644
--- a/conf.py
+++ b/conf.py
@@ -249,6 +249,7 @@
     r'https://sas.goog/.*',
     r'https://www.fs.com/.*',
     r'https://velero.io/.*',
+    r'https://cloud.google.com/.*',
 ]
 
 linkcheck_timeout = 3