:memo; Add titles in table of contents for milestone section.

Author: romsi

README.md

@@ -11,6 +11,9 @@ These guidelines are based on [Building a strong community Github documentation]
 	* [Issue & Pull Request Expectation](#issue--pull-request-expectation)
 	* [Promoting A High Contribution Quality](#promoting-a-high-contribution-quality)
 * [Milestone](#milestone)
+	* [Incremental Title](#incremental-title)
+	* [Short Iterative Due Date](#short-iterative-due-date)
+	* [Github Issue And Pull Request Priority](#github-issue-and-pull-request-priority)
 * [Label](#label)
 * [CHANGELOG](#changelog)
 * [CONTRIBUTING.md](#contributingmd)