[gnome-chess/mallard-help] help: add note in rules.page

[Rashi Aswani <aswanirashi src gnome org>]

commit 961100fe93e596a7178c55ca5e35af9b3ca0c3ff
Author: Rashi Aswani <aswanirashi19 gmail com>
Date:   Fri Aug 1 12:19:28 2014 +0530

    help: add note in rules.page

 help/C/rules.page |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/help/C/rules.page b/help/C/rules.page
index 74bb86d..614940f 100644
--- a/help/C/rules.page
+++ b/help/C/rules.page
@@ -73,5 +73,10 @@
     promoted (converted) to a queen, rook, bishop, or knight of the same color.
     </p></item>
   </list>
+  <note style="important">
+    <p>You can only put the king in check, it can not be captured. If a player
+    is unable to get the king out of check, checkmate results with the loss of
+    the game.</p>
+  </note>
   </section>
 </page>