docs(host.go): Update NewHost comment for clarity

[yxxhero]

Description

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 33.18%. Comparing base (d31df45) to head (177888b).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4092      +/-   ##
==========================================
- Coverage   33.19%   33.18%   -0.01%     
==========================================
  Files         346      346              
  Lines       40589    40589              
==========================================
- Hits        13473    13469       -4     
- Misses      26225    26227       +2     
- Partials      891      893       +2     

Flag	Coverage Δ
unittests	33.18% <ø> (-0.01%)	⬇️

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

Files with missing lines	Coverage Δ
scheduler/resource/persistentcache/host.go	100.00% <ø> (ø)

... and 2 files with indirect coverage changes

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[gaius-qi]

LGTM

[chlins]

lgtm