Merge branch 'fix/backtrace-command' into 'master'

Fix gdb backtrace command

See merge request !7227

doc/administration/troubleshooting/debug.md

@@ -107,7 +107,7 @@ downtime. Otherwise skip to the next section.
 1. To see the current threads, run:
 
     ```
-    apply all thread bt
+    thread apply all bt
     ```
 
 1. Once you're done debugging with `gdb`, be sure to detach from the process and exit: