docs: update fine-grained CPU orchestration doc

[eahydra]

Signed-off-by: Joseph joseph.t.lee@outlook.com

Ⅰ. Describe what this PR does

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Base: 67.65% // Head: 67.65% // No change to project coverage 👍

Coverage data is based on head (a9dd38c) compared to base (7b8e80c).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #855   +/-   ##
=======================================
  Coverage   67.65%   67.65%           
=======================================
  Files         224      224           
  Lines       25581    25581           
=======================================
  Hits        17307    17307           
+ Misses       7076     7072    -4     
- Partials     1198     1202    +4     

Flag	Coverage Δ
unittests	67.65% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/util/httputil/reverseproxy.go	84.30% <0.00%> (-0.54%)	⬇️
pkg/koordlet/runtimehooks/reconciler/reconciler.go	67.05% <0.00%> (+1.17%)	⬆️

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[hormes]

/lgtm
/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes

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[FillZpp]

/milestone v1.1