Create and highlight a git-for-windows.github.io Respository link

The SDK is separate from these web pages.

Signed-off-by: Philip Oakley <philipoakley@iee.org>

Author: Philip Oakley

index.html

@@ -91,6 +91,7 @@ <h3><span class="gittext">Git for Windows SDK</span> : Contributing Code</h3>
 							<p>The <i>Git for Windows SDK</i> is a build environment that includes all the tools necessary for developers who want to contribute by writing code for Git for Windows.</p>
 							<p>Please look at the <a href="https://github.com/git-for-windows/git/wiki/Technical-overview">technical overview</a> about the Git for Windows packaging and how to include your changes in your own custom installer.</p>
 							<a name="download-sdk" /><a class="button" href="https://github.com/git-for-windows/build-extra/releases/latest" target="_blank">Download <span class="gittext">Git for Windows SDK</span></a>
+							<p>To contribute/update this web page, see its <a href=" https://github.com/git-for-windows/git-for-windows.github.io">Repository</a>.</p>
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