docs: Add related docs PR and cleaned up template (#937)

Signed-off-by: Leonard Goodell <[email protected]>

.github/PULL_REQUEST_TEMPLATE.md

@@ -4,39 +4,31 @@ Please check if your PR fulfills the following requirements:
 - [ ] Tests for the changes have been added (for bug fixes / features)
 - [ ] Docs have been added / updated (for bug fixes / features)
 
-<!-- If your build fails due to your commit message not passing the build checks, please review the guidelines here: https://github.com/edgexfoundry/app-functions-sdk-go/blob/master/.github/CONTRIBUTING.md -->
-
-## PR Type
-What kind of change does this PR introduce?
-<!-- Please check the one that applies to this PR using "x". -->
+### Related Docs PR now required (if applicable) 
+Related Docs PR:
 
-- [ ] Bugfix
-- [ ] Feature
-- [ ] Code style update (formatting, local variables)
-- [ ] Refactoring (no functional changes, no api changes)
-- [ ] Build related changes
-- [ ] CI related changes
-- [ ] Documentation content changes
-- [ ] Other... Please describe:
+If n/a for Docs PR, state why it is not applicable:
 
+<!-- If your build fails due to your commit message not passing the build checks, please review the guidelines here: https://github.com/edgexfoundry/app-functions-sdk-go/blob/master/.github/CONTRIBUTING.md -->
 
 ## What is the current behavior?
 <!-- Please describe the current behavior and link to a relevant issue. -->
 
 Issue Number:
 
-
 ## What is the new behavior?
-
+<!-- Please describe the new behavior. -->
 
 ## Does this PR introduce a breaking change?
-<!-- If this PR contains a breaking change, please describe the impact and migration path for existing applications below. -->
+<!-- If this PR contains a breaking change, if so please describe the impact and migration path for existing applications below. -->
 
 - [ ] Yes
 - [ ] No
 
 ## Are there any new imports or modules? If so, what are they used for and why?
 
+- [ ] Yes
+- [ ] No
 
 ## Are there any specific instructions or things that should be known prior to reviewing?