Tweak and adjust issue template (mihonapp/mihon#1817)

Co-authored-by: BrutuZ <brutuz@users.noreply.github.com>
(cherry picked from commit 4f7122d6f09f87930ccd7dae7c557f4b236bbc4b)

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+  - name: ❌ Help with Extensions
+    url: https://komikku-app.github.io/docs/faq/browse/extensions
+    about: For extension-related questions/issues
   - name: 🖥️ Komikku website
     url: https://komikku-app.github.io/
     about: Guides, troubleshooting, and answers to common questions

.github/ISSUE_TEMPLATE/report_issue.yml

@@ -100,5 +100,5 @@ body:
           required: true
         - label: I have filled out all of the requested information in this form, including specific version numbers.
           required: true
-        - label: I understand that extensions are unaffiliated to Mihon, and will not receive any help for any source and/or extension-related issues.
+        - label: I understand that **Mihon does not have or fix any extensions**, and I **will not receive help** for any issues related to sources or extensions.
           required: true