[gnome-user-docs] More specification for file extension

[Marek Černocký <mcernocky src gnome org>]

commit 8188047b8daf58b4dfdd095f7e1a28ac5a0473bf
Author: Marek Černocký <marek manet cz>
Date:   Sat Jun 6 06:05:03 2015 +0200

    More specification for file extension

 gnome-help/C/files-rename.page |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gnome-help/C/files-rename.page b/gnome-help/C/files-rename.page
index 082f8f9..b8b7084 100644
--- a/gnome-help/C/files-rename.page
+++ b/gnome-help/C/files-rename.page
@@ -46,8 +46,8 @@
   <link xref="nautilus-file-properties-basic">properties</link> window.</p>
 
   <p>When you rename a file, only the first part of the name of the file is
-  selected, not the file extension (the part after the <file>.</file>). The
-  extension normally denotes what type of file it is (for example,
+  selected, not the file extension (the part after the last <file>.</file>).
+  The extension normally denotes what type of file it is (for example,
   <file>file.pdf</file> is a PDF document), and you usually do not want to
   change that. If you need to change the extension as well, select the entire
   file name and change it.</p>