Github user aljoscha commented on the pull request:
https://github.com/apache/flink/pull/1320#issuecomment-153782533
I would simply change "Overview 1.0" to "Documentation 1.0" in the doc.
Doc:

Flink Website:

To me this makes it clear that I'm in the documentation. I can click the
Flink Logo to go back to the Flink homepage.
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