add link to metadata in docs

Author: hectorsector

responses/11.0_add-descriptions.md

@@ -1,7 +1,7 @@
 ### Course metadata
-Remember your course's metadata, near the top of your config? We left the description and tagline but it's not time to fill it in.
+Remember your course's metadata, near the top of your config? We left the description and tagline empty at the start of this course, but it's not time to fill them in.
 
-The course description and tagline will be included on the Learning Lab site. Users will see this information before they sign up for the course.
+The [:book: course description and tagline](https://github.github.com/learning-lab-equipment/#/3-4-yaml?id=relevant-syntax) will be included on the Learning Lab site. Users will see this information before they sign up for the course.
 
 ## Step 12: Add course information