docs: Add release notes for 10.0.3

Which was just made.
diff --git a/docs/index.html b/docs/index.html
index 1d37728..4f92801 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -16,6 +16,12 @@
 
 <h1>News</h1>
 
+<h2>February 3, 2014</h2>
+<p>
+<a href="relnotes/10.0.3.html">Mesa 10.0.3</a> is released.
+This is a bug-fix release.
+</p>
+
 <h2>January 9, 2014</h2>
 <p>
 <a href="relnotes/10.0.2.html">Mesa 10.0.2</a> is released.