chore(github-templates): update docs_report template, update template descriptions (vercel#65178)

## Why?

- Update **Docs Request for an Update or Improvement** to **Docs
Report**, similar to **Bug Report**
- Update template descriptions

Closes NEXT-3255

Author: samcx

.github/ISSUE_TEMPLATE/1.bug_report.yml

@@ -1,5 +1,5 @@
 name: Bug Report
-description: Create a bug report for the Next.js core
+description: Create a bug report for Next.js.
 labels: ['bug']
 body:
   - type: markdown

.github/ISSUE_TEMPLATE/2.example_bug_report.yml

@@ -1,5 +1,5 @@
 name: Bug Report for Examples
-description: Create a bug report for one of the Next.js examples
+description: Create a bug report for Next.js examples.
 labels: ['examples']
 body:
   - type: markdown

.github/ISSUE_TEMPLATE/4.docs_report.yml

@@ -0,0 +1,30 @@
+name: 'Docs Report'
+description: Create a report for Next.js documentation.
+title: 'Docs: '
+labels:
+  - 'Documentation'
+body:
+  - type: markdown
+    attributes:
+      value: Before opening a new docs issue, is this something you can help us with? Your contributions are welcomed and appreciated. See our [Docs Contribution Guide](https://nextjs.org/docs/community/contribution-guide) to learn how to edit the Next.js docs.
+  - type: markdown
+    attributes:
+      value: Thank you for helping us update our docs!
+  - type: textarea
+    attributes:
+      label: What is the update you wish to see?
+      description: 'Example: I would like to fix an example using the `<Link>` component. Or, the `<Link>` component docs are missing information.'
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Is there any context that might help us understand?
+      description: A clear description of any added context that might help us understand.
+    validations:
+      required: true
+  - type: input
+    attributes:
+      label: Does the docs page already exist? Please link to it.
+      description: 'Example: https://nextjs.org/docs/app/api-reference/components/link'
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/4.docs_request.yml

@@ -2,10 +2,10 @@ blank_issues_enabled: false
 contact_links:
   - name: Ask a question
     url: https://github.com/vercel/next.js/discussions
-    about: Ask questions and discuss with other community members
+    about: Ask questions and discuss with other community members.
   - name: Feature request
     url: https://github.com/vercel/next.js/discussions/new?category=ideas
-    about: Feature requests should be opened as discussions
+    about: Feature or docs requests should be opened as discussions.
   - name: Next.js Learn course
     url: https://github.com/vercel/next-learn/issues/new
-    about: Next.js Lean course-related issues should be reported in their respective repository
+    about: Next.js Learn course-related issues should be reported in their respective repository.