[tomboy] Update help for new custom search match color option

[Alex Tereschenko <alexter src gnome org>]

commit 813988aea62411ca3b9b6cea25e3ecfc38a8f336
Author: Alex Tereschenko <frozen and blue gmail com>
Date:   Tue Jan 24 20:51:49 2017 +0100

    Update help for new custom search match color option
    
    Signed-off-by: Alex Tereschenko <frozen and blue gmail com>

 help/C/note-edit-prefs.page |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/help/C/note-edit-prefs.page b/help/C/note-edit-prefs.page
index 0bfd054..aa8c74b 100644
--- a/help/C/note-edit-prefs.page
+++ b/help/C/note-edit-prefs.page
@@ -93,6 +93,22 @@
    
  </section>
 
+ <section id="customsearchmatchcolor">
+   <title>Custom Search Match Highlight Color</title>
+   <p>You can choose to use a color for search match highlighting different than the
+    default pre-set one.  This feature is disabled by default.
+   </p>
+   
+   <p>To enable a different color, use your mouse or the spacebar
+   to check <gui>Use custom search match highlight color</gui> in the <gui>Editing</gui>
+   tab of Tomboy's Preferences.</p>
+ 
+   <p>You can then press the color button and a color selection dialog box will appear,
+    allowing you to choose which color you wish to use. Press <key>Ok</key> to save your 
+    selection.</p>
+   
+ </section> 
+
  <section id="renamelinks">
  
    <title>Renaming a Linked Notes</title>