[master] 1ce9cfc typo

[Nils Goroll]

commit 1ce9cfc64fe50c3ba9c471ccebfa88f53d81cd62
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Jul 25 19:49:55 2016 +0200

    typo

diff --git a/doc/changes.rst b/doc/changes.rst
index 2bc336a..90ba66c 100644
--- a/doc/changes.rst
+++ b/doc/changes.rst
@@ -3,7 +3,7 @@ Master
 ======
 
 * varnishhist improvements:
-  * can now generate statistics of backend reqeusts
+  * can now generate statistics of backend requests
   * more predefined profiles
   * time bend option: control the log processing speed
   * y axis scale