[Docs][KubeRay] Fix broken Istio Jaeger dashboard link

[MortalHappiness]

Why are these changes needed?

See the description in the corresponding issue for details.

Related issue number

Closes: #47239

Checks

• I've signed off every commit(by using the -s flag, i.e., git commit -s) in this PR.
• I've run scripts/format.sh to lint the changes in this PR.
• I've included any doc changes needed for https://docs.ray.io/en/master/.
  • I've added any new APIs to the API Reference. For example, if I added a
    method in Tune, I've added it in doc/source/tune/api/ under the
    corresponding .rst file.
• I've made sure the tests are passing. Note that there might be a few flaky tests, see the recent failures at https://flakey-tests.ray.io/
• Testing Strategy
  • Unit tests
  • Release tests
  • This PR is not tested :(

[MortalHappiness]

@kevin85421 PTAL

[MortalHappiness]

I solve this with html tags instead of markdown syntax because there is still an issue in myst-parser. See the issue description for details.

The following is the CI docs build link.

https://anyscale-ray--47244.com.readthedocs.build/en/47244/cluster/kubernetes/k8s-ecosystem/istio.html#step-6-verify-the-auto-mtls-and-l7-observability