update kr README.md

[Temple2001]

Context

• I found additional missing parts in kr README.md after my last PR
  • latest-arm64 image tag in code block
  • Helm chart
  • DISABLE_GENERATE_SETTINGS env variable
  • Converting server settings to env variable
  • discord webhook
  • etc

Choices

Test instructions

Checklist before requesting a review

• [v] I have performed a self-review of my code
• [v] I've added documentation about this change to the README.
• [v] I've not introduced breaking changes.

[thijsvanloef]

Hi @Temple2001! Thank you for taking the time to translate!
I do want to mention, that I am slowly migrating the readmes to a new wiki.
And if you are able to find the time, would really appreciate translating that to new languages as well, you can find the files here:
https://github.com/thijsvanloef/palworld-server-docker/tree/main/docusaurus/i18n/ko/docusaurus-plugin-content-docs/current