docs: update performance data in README and README_cn

[Duslia]

What type of PR is this?

feat

Check the PR title.

• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.

(Optional) Translate the PR title into Chinese.

更新 README 和 README_cn 的性能数据

(Optional) More detail description for this PR(en: English/zh: Chinese).

en: update performance data in README and README_cn
zh(optional): 更新 README 和 README_cn 的性能数据

Which issue(s) this PR fixes:

[codecov]

Codecov Report

Base: 64.54% // Head: 66.17% // Increases project coverage by +1.62% 🎉

Coverage data is based on head (0a9dfe4) compared to base (a8b4a97).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #325      +/-   ##
===========================================
+ Coverage    64.54%   66.17%   +1.62%     
===========================================
  Files           85       85              
  Lines         8315     8319       +4     
===========================================
+ Hits          5367     5505     +138     
+ Misses        2585     2455     -130     
+ Partials       363      359       -4     

Impacted Files	Coverage Δ
pkg/app/client/client.go	73.41% <0.00%> (-1.91%)	⬇️
pkg/protocol/header.go	73.85% <0.00%> (+17.51%)	⬆️
pkg/common/timer/timer.go	80.95% <0.00%> (+19.04%)	⬆️

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