fix(*): fix doc and memory QRM plugin

[caohe]

What type of PR is this?

Bug fixes

What this PR does / why we need it:

• some fixes to README and proposals
• fix incorrect for-range closure usage in memory QRM plugin

Which issue(s) this PR fixes:

Special notes for your reviewer:

[caohe]

@pendoragon Maybe we should consider implementing a separate pipeline for pull requests?

[pendoragon]

@caohe sure, guess linting, unit test and build will suffice for a pull request

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -1.00 ⚠️

Comparison is base (33acfa6) 42.97% compared to head (96dd308) 41.98%.

❗ Current head 96dd308 differs from pull request most recent head 93dde98. Consider uploading reports for the commit 93dde98 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #2      +/-   ##
==========================================
- Coverage   42.97%   41.98%   -1.00%     
==========================================
  Files         145      146       +1     
  Lines       23523    23538      +15     
==========================================
- Hits        10110     9882     -228     
- Misses      12090    12364     +274     
+ Partials     1323     1292      -31     

Flag	Coverage Δ
unittest	41.98% <0.00%> (-1.00%)	⬇️

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

Impacted Files	Coverage Δ
...g/agent/qrm-plugins/memory/dynamicpolicy/policy.go	30.39% <0.00%> (ø)

... and 16 files with indirect coverage changes

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