fix(helm-charts): Fix repo url

[ppapla]

Fix repo urls

References

• https://github.com/wiremock/helm-charts/issues/35

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• [x] The PR request is well described and justified, including the body and the references
• [x] The PR title represents the desired changelog entry
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• [x] Test coverage that demonstrates that the change works as expected
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[leeturner]

Hi @ppapla Many thanks for your first time contribution. We really appreciate it. Some of the changes in this PR have been applied from an earlier PR that we have just merged. Howver, it looks like that earlier PR missed the change to the shell script. Would you be able to sync your changes with the main branch and we can then get this PR merged and apply that final change. Many thanks