[PATCH 1 of 2] doc: reword "config file" to "configuration file"

[Jordi Gutiérrez Hermoso]

# HG changeset patch
# User Jordi Gutiérrez Hermoso <jordigh at octave.org>
# Date 1370540261 14400
# Branch stable
# Node ID 73066ba46ec5631470617e22bd5ed0e036890c73
# Parent  87bb533676338aee8978f99ab53583afb4885ee4
doc: reword "config file" to "configuration file"

While we do use the abbreviation "config" elsewhere in the docs, the
phrase "configuration file" is always written out in full, except in
this location in phases.txt.

diff --git a/mercurial/help/phases.txt b/mercurial/help/phases.txt
--- a/mercurial/help/phases.txt
+++ b/mercurial/help/phases.txt
@@ -52,7 +52,7 @@
   [phases]
   publish = False
 
-See :hg:`help config` for more information on config files.
+See :hg:`help config` for more information on configuration files.
 
 .. note::
   Servers running older versions of Mercurial are treated as