Added the release notes MD file and corresponding node entry in the TOC.html file

Author: DeepakRajSundar

maui-toc.html

@@ -1419,7 +1419,9 @@
 		<li>2025 Volume 3 SP Release - v31.2.*
 			<ul>
 				<li> Weekly Nuget Release 
-					<ul><li><a href="/maui/release-notes/v31.2.18">v31.2.18</a></li><li><a href="/maui/release-notes/v31.2.16">v31.2.16</a></li><li><a href="/maui/release-notes/v31.2.15">v31.2.15</a></li>
+					<ul><li><a href="/maui/release-notes/v31.2.18">v31.2.18</a></li>
+						<li><a href="/maui/release-notes/v31.2.16">v31.2.16</a></li>
+						<li><a href="/maui/release-notes/v31.2.15">v31.2.15</a></li>
 						<li><a href="/maui/release-notes/v31.2.10">v31.2.10</a></li>
 						<li><a href="/maui/release-notes/v31.2.5">v31.2.5</a></li>
 						<li><a href="/maui/release-notes/v31.2.4">v31.2.4</a></li>