Clarify slightly that the image is actually updated by making pull requests against the official-images repository

.template-helpers/template.md

@@ -2,7 +2,7 @@
 
 %%TAGS%%
 
-For more information about this image and its history, please see the [relevant manifest file (`library/%%REPO%%`)](https://github.com/docker-library/official-images/blob/master/library/%%REPO%%) in the [`docker-library/official-images` GitHub repo](https://github.com/docker-library/official-images).
+For more information about this image and its history, please see the [relevant manifest file (`library/%%REPO%%`)](https://github.com/docker-library/official-images/blob/master/library/%%REPO%%). This image is updated via pull requests to [the `docker-library/official-images` GitHub repo](https://github.com/docker-library/official-images).
 
 %%CONTENT%%%%VARIANT%%%%LICENSE%%