Fixed #12278 -- Corrected an example usage of string_concat. Thanks to loumz for…

Fixed #12278 -- Corrected an example usage of string_concat. Thanks to loumz for the report, and timo for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@13167 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/topics/i18n/internationalization.txt

@@ -283,7 +283,7 @@ is included in a string. For example::
     ...
     name = ugettext_lazy(u'John Lennon')
     instrument = ugettext_lazy(u'guitar')
-    result = string_concat([name, ': ', instrument])
+    result = string_concat(name, ': ', instrument)
 
 In this case, the lazy translations in ``result`` will only be converted to
 strings when ``result`` itself is used in a string (usually at template