[gimp-help-2] Fix grammar in Layer mask section

[Ulf-D. Ehlert <ulfehlert src gnome org>]

commit 19dd35a90863a1f5154716025d9ae57add32f7d6
Author: Ulf-D. Ehlert <ulfehlert svn gnome org>
Date:   Tue Oct 26 18:33:47 2010 +0200

    Fix grammar in Layer mask section

 src/dialogs/layer-mask.xml |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/src/dialogs/layer-mask.xml b/src/dialogs/layer-mask.xml
index b26a567..8082cfa 100644
--- a/src/dialogs/layer-mask.xml
+++ b/src/dialogs/layer-mask.xml
@@ -32,10 +32,10 @@
       <listitem>
         <para>
           A transparency mask can be added to each layer, it's called Layer
-          mask. A layer mask has the same size and same pixel number as the
-          layer to which it is attached. Every pixel of the mask can then be
-          coupled with a pixel at the same location in the layer. The mask is
-          a set of pixels in gray-tone on a value scale from 0 to 255. The
+          mask. A layer mask has the same size and same number of pixels as
+          the layer to which it is attached. Every pixel of the mask can then
+          be coupled with a pixel at the same location in the layer. The mask
+          is a set of pixels in gray-tone on a value scale from 0 to 255. The
           pixels with a value 0 are black and give a full transparency to the
           coupled pixel in the layer. The pixels with a value 255 are white
           and give a full opacity to the coupled pixel in the layer.