[master] 0743434 comment typo

[Nils Goroll]

commit 074343416071b694d61edc7ee52bb1905ea35140
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Thu Oct 27 06:51:40 2016 +0200

    comment typo

diff --git a/bin/varnishd/cache/cache_wrk.c b/bin/varnishd/cache/cache_wrk.c
index 5549408..4e8af44 100644
--- a/bin/varnishd/cache/cache_wrk.c
+++ b/bin/varnishd/cache/cache_wrk.c
@@ -422,7 +422,7 @@ pool_breed(struct pool *qp)
  * pool_breed(), we sleep whenever we create a thread and a little while longer
  * whenever we fail to, hopefully missing a lot of cond_signals in the meantime.
  *
- * Idle threads are destroyed at a rate termined by wthread_destroy_delay
+ * Idle threads are destroyed at a rate determined by wthread_destroy_delay
  *
  * XXX: probably need a lot more work.
  *