[#1664] improvement(docs): Update the descriptions and default values of outdated conf

[rickyma]

What changes were proposed in this pull request?

Update the descriptions and default values of some configurations.

Why are the changes needed?

Fix: #1664.

Does this PR introduce any user-facing change?

No.

How was this patch tested?

Unnecessary.

[github-actions]

Test Results

 2 362 files  + 62   2 362 suites  +62   4h 24m 28s ⏱️ + 23m 10s
   919 tests ±  0     917 ✅ ±  0   1 💤 ±0  0 ❌ ±0  1 🔥 ±0 
10 615 runs  +120  10 600 ✅ +122  14 💤 ±0  0 ❌ ±0  1 🔥  - 2 

For more details on these errors, see this check.

Results for commit 1f77cc1. ± Comparison against base commit 45ad0b8.

♻️ This comment has been updated with latest results.

[roryqi]

Did you verify these parameters in your production environment?

[rickyma]

Did you verify these parameters in your production environment?

I don't get your point. I've just changed the docs in this PR. I think it does not need any tests.

[roryqi]

Did you verify these parameters in your production environment?

I don't get your point. I've just changed the docs in this PR. I think it does not need any tests.

You seems to change some default values. Did you use these default values in your production environment?

[rickyma]

Did you verify these parameters in your production environment?

I don't get your point. I've just changed the docs in this PR. I think it does not need any tests.

You seems to change some default values. Did you use these default values in your production environment?

I did not change any default values. You can check again. I just update the docs for the configs whose default values are outdated.

[roryqi]

You seem to modify this value.

[rickyma]

This is just a doc about configs when using Netty. And it is more reasonable because we don't use that much heap memory anymore when enabling Netty. I've tested this (20g) already. It works perfectly. Even maybe 10g of heap memory is enough too(I will test this later).

[roryqi]

OK, I got it.