Fix gdb backtrace command

Correct the command to get a gdb backtrace from all threads. `apply` is not a valid gdb command. See https://sourceware.org/gdb/onlinedocs/gdb/Threads.html#Threads .

Fix gdb backtrace command
c7dd62a0 · Daniel Axelrod · e2e3f196 · c7dd62a0
Commit c7dd62a0 authored Nov 01, 2016 by Daniel Axelrod
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debug.md doc/administration/troubleshooting/debug.md +1 -1

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--- a/doc/administration/troubleshooting/debug.md
+++ b/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: