Cleans up and clarifies gitignore contribution guidelines

Adds clarification around our expectations for contributions and
how contributions will be handled when they don't meet our requirements.

Updates template to lean into our contribution guidelines.

Cleans up duplicate wording around our contribution guidelines.

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,3 +1,10 @@
+### Link to the application or project's homepage
+
+_TODO_
+<!---
+Link to the project or application's homepage.
+--->
+
 ### Reasons for making this change
 
 _TODO_
@@ -8,9 +15,8 @@ Please provide some background for this change.
 ### Links to documentation supporting these rule changes
 
 _TODO_
-
 <!---
-Link to the project docs, any existing .gitignore files that project may have in it's own repo, etc
+Link to the project docs, any existing .gitignore files that project may have in its own repo, etc
 --->
 
 ### If this is a new template
@@ -18,6 +24,14 @@ Link to the project docs, any existing .gitignore files that project may have in
 Link to application or project’s homepage: TODO
 
 ### Merge and Approval Steps
-- [ ] Confirm that you've read the [contribution guidelines](https://github.com/github/gitignore/tree/main?tab=readme-ov-file#contributing-guidelines) and ensured your PR aligns
-- [ ] Ensure CI is passing
-- [ ] Get a review and Approval from one of the maintainers
+
+<!---
+Please ensure you accomplish these tasks in order to get your contribution accepted
+--->
+- [ ] I have read the [contribution guidelines](https://github.com/github/gitignore/tree/main?tab=readme-ov-file#contributing-guidelines) and understand my PR will be closed if it doesn't meet these guidelines
+- [ ] I have ensured CI is passing
+
+<!---
+Once done, please wait for a GitHub maintainer to review your PR and if necessary,
+work with them to address any findings.
+--->