docs: change kpm to kcl

[beholdenkey]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

2. What is the scope of this PR (e.g. component or file name):

https://github.com/kcl-lang/kcl-lang.io/blob/main/docs/user_docs/concepts/package-and-module.md

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• [X ] Other

Changed kpm to kcl for consistency.

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• [X ] N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

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Name	Status	Preview	Comments	Updated (UTC)
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[github-actions]

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[Peefy]

kcl mod init

Good catch!

[Peefy]

Hello @beholdenkey

Thanks for the contribution. I've leaved some comments and please sign the CLA.

[beholdenkey]

@Peefy happy to contribute. Where can I sign the CLA?

[Peefy]

@Peefy happy to contribute. Where can I sign the CLA?

See the github bot comment.

[beholdenkey]

I have read the CLA Document and hereby sign the CLA