Update .pullapprove.yml (GoogleChrome#1271)

enable devtools folks to approve partials

Author: Sam Thorogood

.pullapprove.yml

@@ -68,6 +68,7 @@ groups:
         files.include('site/en/docs/devtools/*') or
         files.include('site/_data/docs/devtools/*') or
         files.include('site/_data/i18n/docs/devtools.yml') or
+        files.include('site/_includes/partials/devtools/*') or
         files.include('site/en/blog/*').exclude('site/en/blog/blog.11tydata.js')
 
   # Content