Use same case for Java language in Wildfly stacks than others

[apupier]

What does this PR do?:

Use same case for Java language in Wildfly stacks than others

it avoids having Java and java listed in tooling
for instance:

Which issue(s) this PR fixes:

Link to github issue(s)

PR acceptance criteria:

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• Test automation
  Does this repository's tests pass with your changes?
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How to test changes / Special notes to the reviewer:

[openshift-ci]

Hi @apupier. Thanks for your PR.

I'm waiting for a devfile member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[thepetk]

LGTM, @ehsavoie could you also review as the owner of the stack?

[thepetk]

/ok-to-test

[Jdubrick]

Nice catch!

[thepetk]

Needs approval from @devfile/che-team too.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: apupier, ehsavoie, Jdubrick, RomanNikitenko

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