[gimp-web] Added link for "Luminosity Masks" tutorial

[Pat David <patdavid src gnome org>]

commit 6eed9b6a643f91ac754effadeb439c5a67a16178
Author: Pat David <patdavid src gnome org>
Date:   Tue Nov 12 16:30:46 2013 -0600

    Added link for "Luminosity Masks" tutorial
    
    Signed-off-by: Pat David <patdavid src gnome org>

 tutorials/index.htrw |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/tutorials/index.htrw b/tutorials/index.htrw
index 0040f8b..6203a0c 100644
--- a/tutorials/index.htrw
+++ b/tutorials/index.htrw
@@ -147,7 +147,10 @@
   <a href="Blending_Exposures/">Blending Exposures</a> Increase dynamic range by combining different 
exposures of the same scene.
 </p>
 <p>
-  <a href="Smart_Sharpening/">"Smart" Sharpening</a> Sharpen images without making noise more noticable.
+  <a href="Smart_Sharpening/">&ldquo;Smart&rdquo; Sharpening</a> Sharpen images without making noise more 
noticable.
+</p>
+<p>
+  <a href="Luminosity_Masks/">Luminosity Masks</a> Isolate specific luminosity tones in your image for 
editing.
 </p>
 
 <h2><a name="Web"></a>Web</h2>