Merge pull request #8427 from ikesnowy/add-summary-to-microsoft-extensions-options

Author: tarekgh

xml/ns-Microsoft.Extensions.Options.xml

@@ -1,6 +1,14 @@
 <Namespace Name="Microsoft.Extensions.Options">
   <Docs>
-    <summary>To be added.</summary>
-    <remarks>To be added.</remarks>
+    <summary>Provides types used for implementing the options pattern.</summary>
+    <remarks>
+      <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+For more information about implementing the options pattern, see [Options pattern in .NET](/dotnet/core/extensions/options).
+
+ ]]></format>
+    </remarks>
   </Docs>
 </Namespace>