[master] 918c848 Typo

[Guillaume Quintard]

commit 918c848d12d4e9eec3b61196358d6fb5a49690ce
Author: Guillaume Quintard <guillaume at varnish-software.com>
Date:   Mon Feb 12 11:31:38 2018 +0100

    Typo

diff --git a/doc/changes.rst b/doc/changes.rst
index cb9fe31..a82cacc 100644
--- a/doc/changes.rst
+++ b/doc/changes.rst
@@ -55,7 +55,7 @@ Logging / statistics
 * Turned off PROXY protocol debugging by default, can be enabled with
   the ``protocol`` debug flag
 
-* added ``cache_hit_grace`` statisctics counter
+* added ``cache_hit_grace`` statistics counter
 
 C APIs (for vmod and utility authors)
 -------------------------------------