docs: Clarify issues vs discussions (#90)

Author: alessfg

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -12,10 +12,10 @@ body:
 
         Remember to redact any sensitive information such as authentication credentials and/or license keys!
 
-        **Note:** If you are seeking community support or have a question, please consider starting a new thread via [GitHub discussions][discussions] or the [NGINX Community forum][forum].
+        **Note:** If you are seeking community support, please start a new topic in the [NGINX Community forum][forum]. If you wish to discuss the codebase, please start a new thread via [GitHub discussions][discussions].
 
-        [issue search]: ../search?q=is%3Aissue&type=issues
-        [discussions]: ../discussions
+        [issue search]: https://github.com/{{REPOSITORY_OWNER}}/{{REPOSITORY_URL}}/search?q=is%3Aissue&type=issues
+        [discussions]: https://{{REPOSITORY_OWNER}}/{{REPOSITORY_URL}}/discussions
         [forum]: https://community.nginx.org
 
   - type: textarea

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -10,10 +10,10 @@ body:
 
         Before you continue filling out this request, please take a moment to check that your feature has not been [already requested on GitHub][issue search] 🙌
 
-        **Note:** If you are seeking community support or have a question, please consider starting a new thread via [GitHub discussions][discussions] or the [NGINX Community forum][forum].
+        **Note:** If you are seeking community support, please start a new topic in the [NGINX Community forum][forum]. If you wish to discuss the codebase, please start a new thread via [GitHub discussions][discussions].
 
-        [issue search]: ../search?q=is%3Aissue&type=issues
-        [discussions]: ../discussions
+        [issue search]: https://github.com/{{REPOSITORY_OWNER}}/{{REPOSITORY_URL}}/search?q=is%3Aissue&type=issues
+        [discussions]: https://{{REPOSITORY_OWNER}}/{{REPOSITORY_URL}}/discussions
         [forum]: https://community.nginx.org
 
   - type: textarea

SUPPORT.md

@@ -20,10 +20,6 @@ For a comprehensive list of all NGINX directives, check out <https://nginx.org>.
 
 For a comprehensive list of administration and deployment guides for all NGINX products, check out <https://docs.nginx.com>.
 
-### Mailing List
-
-Want to get in touch with the NGINX development team directly? Try using the relevant mailing list found at <https://mailman.nginx.org/mailman3/lists/>!
-
 ## Contributing
 
 Please see the [contributing guide](/CONTRIBUTING.md) for guidelines on how to best contribute to this project.