Fix typo in using.rst: no space before the colon.

docs/using.rst

@@ -6,30 +6,30 @@ Sites using Pipeline
 
 The following sites are a partial list of people using Pipeline.
 
-Are you using pipeline and not being in this list ? Drop us a line. 
+Are you using pipeline and not being in this list? Drop us a line. 
 
 20 Minutes
 ----------
 
-For their internal tools : http://www.20minutes.fr
+For their internal tools: http://www.20minutes.fr
 
 Pitchfork
 ---------
 
-For their main website : http://pitchfork.com
+For their main website: http://pitchfork.com
 
 The Molly Project
 -----------------
 
 Molly is a framework for the rapid development of information and service
-portals targeted at mobile internet devices : http://mollyproject.org
+portals targeted at mobile internet devices: http://mollyproject.org
 
-It powers the University of Oxford's mobile portal : http://m.ox.ac.uk/
+It powers the University of Oxford's mobile portal: http://m.ox.ac.uk/
 
 Croisé dans le Métro
 --------------------
 
-For their main and mobile website :
+For their main and mobile website:
 
 * http://www.croisedanslemetro.com
 * http://m.croisedanslemetro.com
@@ -37,7 +37,7 @@ For their main and mobile website :
 Ulule
 -----
 
-For their main and forum website :
+For their main and forum website:
 
 * http://www.ulule.com
 * http://vox.ulule.com