[jdk8u-dev] RFR: 8251551: Use .md filename extension for README

[Paul Hohensee]

On Tue, 21 Jun 2022 07:52:23 GMT, George Adams <duke at openjdk.org> wrote:

> Backports https://bugs.openjdk.org/browse/JDK-8251551 as it's a low-risk change and generally improves the readability/usability in GitHub.
> 
> Currently, I've just converted the README to markdown format and added a little syntax highlighting. I'm not sure if people would like me to go one step further and rip out the mercurial/nested repo references?

Andrew, I reviewed https://github.com/openjdk/jdk8u-dev/pull/79.

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PR: https://git.openjdk.org/jdk8u-dev/pull/75