Improve the "bug report" template and "support options" document (#26753)

* `/help/support` is a better document than
`/administration/logging-config` for bug reporting
* Improve `support.en-us.md`
    * Move/add detailed contents into `Advanced Bug Report Tips` section
    * Merge `Chinese Support` section into `Support Options`

1 files changed, 45 insertions, 22 deletions

diff --git a/docs/content/help/support.en-us.md b/docs/content/help/support.en-us.md
index 24afe67bb8..db735b8124 100644
--- a/docs/content/help/support.en-us.md
+++ b/docs/content/help/support.en-us.md
@@ -22,34 +22,57 @@ menu:
 - [Discourse Forum](https://discourse.gitea.io/)
 - [Matrix](https://matrix.to/#/#gitea-space:matrix.org)
   - NOTE: Most of the Matrix channels are bridged with their counterpart in Discord and may experience some degree of flakiness with the bridge process.
+- Chinese Support
+  - [Discourse Chinese Category](https://discourse.gitea.io/c/5-category/5)
+  - QQ Group 328432459
+
+# Bug Report
+
+If you found a bug, please [create an issue on GitHub](https://github.com/go-gitea/gitea/issues).
 
 **NOTE:** When asking for support, it may be a good idea to have the following available so that the person helping has all the info they need:
 
 1. Your `app.ini` (with any sensitive data scrubbed as necessary).
-2. The Gitea logs, and any other appropriate log files for the situation.
-    - When using systemd, use `journalctl --lines 1000 --unit gitea` to collect logs.
-    - When using docker, use `docker logs --tail 1000 <gitea-container>` to collect logs.
-    - By default, the logs are outputted to console. If you need to collect logs from files,
-      you could copy the following config into your `app.ini` (remove all other `[log]` sections),
-      then you can find the `*.log` files in Gitea's log directory (default: `%(GITEA_WORK_DIR)/log`).
-
-    ```ini
-    ; To show all SQL logs, you can also set LOG_SQL=true in the [database] section
-    [log]
-    LEVEL=debug
-    MODE=console,file
-    ```
-
-3. Any error messages you are seeing.
-4. When possible, try to replicate the issue on [try.gitea.io](https://try.gitea.io) and include steps so that others can reproduce the issue.
-    - This will greatly improve the chance that the root of the issue can be quickly discovered and resolved.
-5. If you encounter slow/hanging/deadlock problems, please report the stack trace when the problem occurs.
+2. Any error messages you are seeing.
+3. The Gitea logs, and all other related logs for the situation.
+   - It's more useful to collect `trace` / `debug` level logs (see the next section).
+   - When using systemd, use `journalctl --lines 1000 --unit gitea` to collect logs.
+   - When using docker, use `docker logs --tail 1000 <gitea-container>` to collect logs.
+4. Reproducible steps so that others could reproduce and understand the problem more quickly and easily.
+   - [try.gitea.io](https://try.gitea.io) could be used to reproduce the problem.
+5. If you encounter slow/hanging/deadlock problems, please report the stacktrace when the problem occurs.
    Go to the "Site Admin" -> "Monitoring" -> "Stacktrace" -> "Download diagnosis report".
 
-## Bugs
+# Advanced Bug Report Tips
+
+## More Config Options for Logs
+
+By default, the logs are outputted to console with `info` level.
+If you need to set log level and/or collect logs from files,
+you could just copy the following config into your `app.ini` (remove all other `[log]` sections),
+then you will find the `*.log` files in Gitea's log directory (default: `%(GITEA_WORK_DIR)/log`).
+
+```ini
+; To show all SQL logs, you can also set LOG_SQL=true in the [database] section
+[log]
+LEVEL=debug
+MODE=console,file
+```
 
-If you found a bug, please create an [issue on GitHub](https://github.com/go-gitea/gitea/issues).
+## Collecting Stacktrace by Command Line
+
+Gitea could use Golang's pprof handler and toolchain to collect stacktrace and other runtime information.
+
+If the web UI stops working, you could try to collect the stacktrace by command line:
+
+1. Set `app.ini`:
+
+    ```
+    [server]
+    ENABLE_PPROF = true
+    ```
 
-## Chinese Support
+2. Restart Gitea
 
-Support for the Chinese language is provided at [Our discourse](https://discourse.gitea.io/c/5-category/5) or QQ Group 328432459.
+3. Try to trigger the bug, when the requests get stuck for a while,
+   use `curl` or browser to visit: `http://127.0.0.1:6060/debug/pprof/goroutine?debug=1` to get the stacktrace.