Update issue templates

.github/ISSUE_TEMPLATE.md

@@ -10,7 +10,7 @@ I acknowledge that:
 
 ---
 
-### Device information
+## Device information
 * Tachiyomi version: ?
 * Android version: ?
 * Device: ?

.github/ISSUE_TEMPLATE/bug_report.md

@@ -17,7 +17,7 @@ I acknowledge that:
 
 ---
 
-### Device information
+## Device information
 * Tachiyomi version: ?
 * Android version: ?
 * Device: ?
@@ -32,5 +32,5 @@ This should happen.
 ### Actual behavior
 This happened instead.
 
-### Other details
+## Other details
 Additional details and attachments.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Tachiyomi help website
+    url: https://tachiyomi.org/help/
+    about: Common questions are answered here.
+  - name: Tachiyomi extensions GitHub repository
+    url: https://github.com/inorichi/tachiyomi-extensions
+    about: Issues about an extension/source/catalogue should be opened here instead.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -17,8 +17,8 @@ I acknowledge that:
 
 ---
 
-### Why/User Benefit/User Problem
+## Why/User Benefit/User Problem
 (explain why this feature should be added)
 
-### What/Requirements
+## What/Requirements
 (explain how this feature would behave)

.github/ISSUE_TEMPLATE/source_issue.md

@@ -2,7 +2,7 @@
 name: "Extension/source/catalogue issue"
 about: "Do not open an issue here. See https://github.com/inorichi/tachiyomi-extensions"
 title: "THIS ISSUE IS IN THE WRONG REPO; SEE https://github.com/inorichi/tachiyomi-extensions"
-labels: "catalog"
+labels: "catalog, invalid"
 ---
 
-DO NOT OPEN AN ISSUE IN THIS REPO. SEE https://github.com/inorichi/tachiyomi-extensions
+DO NOT OPEN AN ISSUE IN THIS REPO. SEE https://github.com/inorichi/tachiyomi-extensions