fix(bug): just change kvcache and param_host name

[wasamtc]

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💡 Description

old version's kvcahce and param_hosting_ratio name is not correct, change it to better understand

Key Changes

1.param_hosting_ratio -> param_mem_ratio
2.kv-cache-ratio -> kvcache-mem-ratio

🔗 Related Issues

List any issues this PR closes or relates to:

• Closes fix(bug): param-hosting-ratio -> param_mem_ratio #227

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• I have performed a self-review of my own code.
• I have added/updated tests that prove my fix or feature works (if applicable).
• I have updated the documentation (if necessary).
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