Improve wording of feature issue template.

.github/ISSUE_TEMPLATE.md

@@ -8,18 +8,18 @@ Before filling this form, visit https://github.com/opendatakit/collect/issues?q=
 
 For all problem reports, please use the template below. Also include any relevant stack traces or error messages.
 
-For feature requests, delete the template and discuss the high level problem you want to solve and how you think the new feature should behave.
+For feature requests, please include the problem description (what problem do you have that can't currently be solved?) and a proposed solution if you have one in mind (optional). You can delete the template. 
 
 -->
 
-### Software and hardware versions
+*Software and hardware versions*
 _(ODK Collect, Android, device used...)_
 
-### Problem description
+*Problem description*
 
-### Steps to reproduce the problem
+*Steps to reproduce the problem*
 
-### Expected behavior
+*Expected behavior*
 
-### Other information
+*Other information*
 _(Things you tried, stack traces, related issues, suggestions on how to fix it...)_