mpm_fdqueue: follow up to r1821624.
Fix typo in comment.
#include <apr.h>
-/* This code is not AP_DECLARE()ed/exported, and use by MPMs event/worker
+/* This code is not AP_DECLARE()ed/exported, and used by MPMs event/worker
* only (for now), not worth thinking about w/o threads either...
*/
#if APR_HAS_THREADS
