[gnote] Add missing id parameter to <section> so yelp-check validates

[Andre Klapper <aklapper src gnome org>]

commit a36d495bda081338a2664518826722cd08b90b00
Author: Andre Klapper <a9016009 gmx de>
Date:   Thu Sep 28 17:25:30 2017 +0200

    Add missing id parameter to <section> so yelp-check validates

 help/C/gnote-links.page |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/C/gnote-links.page b/help/C/gnote-links.page
index cf9ef39..37321ed 100644
--- a/help/C/gnote-links.page
+++ b/help/C/gnote-links.page
@@ -27,7 +27,7 @@
 <note style="advanced">
     <p>Changing a note's title will update links present in other notes. This prevents broken links from 
occurring when a note is renamed.</p></note>
 
-  <section><title>Backlinks Add-in</title>
+  <section id="backlinks"><title>Backlinks Add-in</title>
     <p>When the <app>Backlinks</app> plugin is installed, the <gui>Actions</gui> menu will contain an item 
<gui>What links here?</gui>, which provides a sub-menu listing all notes containing a link to the current 
note.</p>
   </section>