RFR: 8302879: doc/building.md update link to jtreg builds

Mon Feb 20 21:57:24 UTC 2023

On Mon, 20 Feb 2023 14:22:40 GMT, George Adams <gdams at openjdk.org> wrote:

> The Eclipse Adoptium project recently moved its CI from ci.adoptopenjdk.net to ci.adoptium.net. The link to jtreg builds needs updating
> 
> See https://github.com/adoptium/infrastructure/issues/2932 for more context

Marked as reviewed by clanger (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/12665