[mod] revision of the issue templates

BTW blank issues are now longer allowed.

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

.github/ISSUE_TEMPLATE/feature-request.md

@@ -1,23 +1,32 @@
 ---
-name: Feature request
-about: Request a new feature in SearXNG
-title: ''
-labels: enhancement
-assignees: ''
-
+name: "Feature request"
+about: "Request a new feature in SearXNG"
+labels: ["new feature"]
+type: "feature"
 ---
-<!-- PLEASE FILL THESE FIELDS, IT REALLY HELPS THE MAINTAINERS OF SearXNG -->
 
-**Is your feature request related to a problem? Please describe.**
-<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+_Replace this placeholder with a concise description of the feature._
+
+<!-- FILL IN THESE FIELDS .. and delete the comments after reading.
+
+     Use Markdown for formatting ->  https://www.markdowntools.io/cheat-sheet
+-->
+
+### Is your feature request related to a problem?
+
+<!-- A clear and concise description of what the problem is. Ex. I'm always
+     frustrated when [...] -->
+
+### Describe the solution you'd like
 
-**Describe the solution you'd like**
 <!-- A clear and concise description of what you want to happen. -->
 
-**Describe alternatives you've considered**
+### Describe alternatives you've considered
+
 <!-- A clear and concise description of any alternative solutions or features you've considered. -->
 
-**Additional context**
-<!-- Add any other context or screenshots about the feature request here. -->
+### Code of Conduct
 
-- [ ] I read the [AI Policy](https://github.com/searxng/searxng/blob/master/AI_POLICY.rst) and hereby confirm that this issue conforms with the policy.
+[AI Policy]: https://github.com/searxng/searxng/blob/master/AI_POLICY.rst
+
+- [ ] I read the [AI Policy] and hereby confirm that this issue conforms with the policy.