Ignore markdown changes in lerna updated

Author: brianc

lerna.json

@@ -4,5 +4,8 @@
   ],
   "npmClient": "yarn",
   "useWorkspaces": true,
-  "version": "independent"
+  "version": "independent",
+  "ignoreChanges": [
+    "**/*.md"
+  ]
 }