Varnishsizes.rst: Mention that scale is in bytes

Fixes #794

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@5643 d4fa192b-c00b-0410-8231-f00ffab90ce4

doc/sphinx/reference/varnishsizes.rst

@@ -23,9 +23,11 @@ varnishsizes [-b] [-C] [-c] [-d] [-I regex] [-i tag] [-n varnish_name]
 DESCRIPTION
 ===========
 
-The varnishsizes utility reads varnishd(1) shared memory logs and presents a continuously updated histogram
-showing the distribution of the last N requests by their processing.  The value of N and the vertical scale are
-displayed in the top left corner.  The horizontal scale is logarithmic.  Hits are marked with a pipe character
+The varnishsizes utility reads varnishd(1) shared memory logs and presents
+a continuously updated histogram showing the distribution of the last N
+requests by their processing.  The value of N and the vertical scale are
+displayed in the top left corner.  The horizontal scale is a logarithmic
+representation of bytes.  Hits are marked with a pipe character
 ("|"), and misses are marked with a hash character ("#").
 
 The following options are available: