chrore(gae): fix region tags for images thumbnailer in appengine/standard/images/api/ (#13051)

* chore(gae): rename regions in blobstore.py

* chore(gae): rename regions in main.py

Author: eapl-gemugami

appengine/standard/images/api/blobstore.py

@@ -18,8 +18,8 @@
 For more information, see README.md.
 """
 
-# [START all]
-# [START thumbnailer]
+# [START gae_images_api_blobstore]
+# [START gae_images_api_blobstore_thumbnailer]
 from google.appengine.api import images
 from google.appengine.ext import blobstore
 
@@ -47,7 +47,7 @@ def get(self):
         self.error(404)
 
 
-# [END thumbnailer]
+# [END gae_images_api_blobstore_thumbnailer]
 
 
 class ServingUrlRedirect(webapp2.RequestHandler):
@@ -73,4 +73,4 @@ def get(self):
 app = webapp2.WSGIApplication(
     [("/img", Thumbnailer), ("/redirect", ServingUrlRedirect)], debug=True
 )
-# [END all]
+# [END gae_images_api_blobstore]

appengine/standard/images/api/main.py

@@ -18,8 +18,8 @@
 For more information, see README.md.
 """
 
-# [START all]
-# [START thumbnailer]
+# [START gae_images_api_ndb]
+# [START gae_images_api_ndb_thumbnailer]
 from google.appengine.api import images
 from google.appengine.ext import ndb
 
@@ -51,8 +51,8 @@ def get(self):
         self.error(404)
 
 
-# [END thumbnailer]
+# [END gae_images_api_ndb_thumbnailer]
 
 
 app = webapp2.WSGIApplication([("/img", Thumbnailer)], debug=True)
-# [END all]
+# [END gae_images_api_ndb]