[master] e82cedd typo

[Nils Goroll]

commit e82cedd26561dc7900049d32afed93f65a42c36b
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Oct 13 19:37:37 2014 +0200

    typo

diff --git a/doc/graphviz/cache_req_fsm.dot b/doc/graphviz/cache_req_fsm.dot
index 7311c6f..5ccfdf0 100644
--- a/doc/graphviz/cache_req_fsm.dot
+++ b/doc/graphviz/cache_req_fsm.dot
@@ -1,5 +1,5 @@
 /*
- * we should format labels in a reable form like
+ * we should format labels in a readable form like
  *			 label="\
  *			 {cnt_deliver:|\
  *				 Filter obj.-\>resp.|\