[gtkmm-documentation] Typo fixed

[Daniel Mustieles GarcÃa <dmustieles src gnome org>]

commit 143c039f9375f9021b25b650bf2aeea40245cb6d
Author: Daniel Mustieles <daniel mustieles gmail com>
Date:   Wed Jul 25 11:18:23 2012 +0200

    Typo fixed

 docs/tutorial/C/gtkmm-tutorial-in.xml |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/docs/tutorial/C/gtkmm-tutorial-in.xml b/docs/tutorial/C/gtkmm-tutorial-in.xml
index c34dbce..40fcbed 100644
--- a/docs/tutorial/C/gtkmm-tutorial-in.xml
+++ b/docs/tutorial/C/gtkmm-tutorial-in.xml
@@ -7182,7 +7182,7 @@ and hints for creating &gtkmm; applications.
     files can be compiled in the correct order.
     <application>Autoconf</application> permits automatic configuration of
     software installation, handling a large number of system quirks to increase
-    portability..
+    portability.
 </para>
 
 <para>Subclass Widgets to better organize your code. You should probably