link to meta-documentation in PR template

Author: psFried

.github/pull_request_template.md

@@ -8,7 +8,7 @@
 
 **Documentation links affected:**
 
-(list any documentation links that you created, or existing ones that you've identified as needing updates, along with a brief description)
+(list any [documentation links](https://docs.google.com/document/d/1SRC9VS9zyCzWl3n4HXHbc4wPB1eLxJHkA2rtu9ZNokM/edit?usp=sharing) that you created, or existing ones that you've identified as needing updates, along with a brief description)
 
 **Notes for reviewers:**