[6.0] a33aa0481 Update doc

[Dridi Boukelmoune]

commit a33aa0481630ed033c363de2ac1372f50f02ee09
Author: Valentin Matei <matheuzzy at gmail.com>
Date:   Tue Jul 31 12:47:45 2018 +0300

    Update doc
    
    client content -> client context

diff --git a/lib/libvmod_directors/vmod.vcc b/lib/libvmod_directors/vmod.vcc
index cc5f9aed2..8fecc08e7 100644
--- a/lib/libvmod_directors/vmod.vcc
+++ b/lib/libvmod_directors/vmod.vcc
@@ -438,7 +438,7 @@ is _not_ the order given when backends are added.
     * when called in backend context: Use the varnish hash value as
       set by `vcl_hash`
 
-    * when called in client content: hash `req.url`
+    * when called in client context: hash `req.url`
 
   * `URL`: hash req.url / bereq.url