Minor: correct README.md (#7880)

README.md

@@ -7,16 +7,17 @@
 </div>
 
 ## Contents
+
 1. [Overview](#overview)
-1. [How to Get Apache Geode](#obtaining)
-1. [Main Concepts and Components](#concepts)
-1. [Location of Directions for Building from Source](#building)
-1. [Geode in 5 minutes](#started)
-1. [Application Development](#development)
-1. [Documentation](https://geode.apache.org/docs/)
-1. [Wiki](https://cwiki.apache.org/confluence/display/GEODE/Index)
-1. [How to Contribute](https://cwiki.apache.org/confluence/display/GEODE/How+to+Contribute)
-1. [Export Control](#export)
+2. [How to Get Apache Geode](#obtaining)
+3. [Main Concepts and Components](#concepts)
+4. [Location of Directions for Building from Source](#building)
+5. [Geode in 5 minutes](#started)
+6. [Application Development](#development)
+7. [Documentation](https://geode.apache.org/docs/)
+8. [Wiki](https://cwiki.apache.org/confluence/display/GEODE/Index)
+9. [How to Contribute](https://cwiki.apache.org/confluence/display/GEODE/How+to+Contribute)
+10. [Export Control](#export)
 
 ## <a name="overview"></a>Overview