Update PULL_REQUEST_TEMPLATE.md

Tweaked to make the information we need a little clearer

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,24 +1,19 @@
-**Please use a short, but meaningful title. Indicate which issue is targeted (if any).**
+*General Instructions*
 
-*Make sure to fill-in as much information as possible in the sections below:*
+- *Please use a short, but meaningful title.*
+- *Delete everything in italics before submitting the pull request*
+- *Make sure to fill in as much information as possible*
 
-### Related issue(s), pull request(s)
+#### This pull request is a Work In Progress|Finalized|Other
+*(choose ONE from the above list and delete the others)*
 
-See also #NUMBER
+#### Related issue(s) and/or pull request(s)
+*Example: See also #NUMBER*
 
-### This pull request is:
-
-*(choose an option)*
-
-* Work in progress
-* Finalized
-* Other?
-
-### Test cases, sample files
+#### Test cases, sample files
 
 *(if relevant, please indicate public EPUB URL(s), or whether you can share ebook(s) privately)*
 
 
 ### Additional information
-
-...
+*Please provide any and all information that might help us*