RFR: 7794: Update the link to the adoptium download site

[Christoph Langer]

On Wed, 13 Apr 2022 23:04:36 GMT, Bernd <duke at openjdk.java.net> wrote:

> The AdoptOpenJDK no longer has the latest builds.
> Also use https for Links.

Marked as reviewed by clanger (Author).

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PR: https://git.openjdk.java.net/jmc/pull/397