RFR: 8306408: Fix the format of several tables in building.md

[Dingli Zhang]

On Wed, 19 Apr 2023 13:08:31 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> I see we have this style of tables already present in building.md, so it should be fine. Generating building.html from this does cause a diff to the html file, so those still need to go in together. Please find a regenerated building.html in my branch here: https://github.com/erikj79/jdk/tree/JDK-8306408-regen-building.html

Thanks!

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PR Comment: https://git.openjdk.org/jdk/pull/13523#issuecomment-1514926853