[bugfix] change write-vm-memory-cache-size default config replace location

[yun-yeo]

Summary of changes

close #575

Report of required housekeeping

• Github issue OR spec proposal link
• Wrote tests
• Updated API documentation (client/lcd/swagger-ui/swagger.yaml)
• Added a relevant changelog entry: clog add [section] [stanza] [message]

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(FOR ADMIN) Before merging

• Added appropriate labels to PR
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)
• Confirm added tests are consistent with the intended behavior of changes
• Ensure all tests pass

[codecov]

Codecov Report

Merging #576 (b411b06) into main (5bca395) will increase coverage by 0.02%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #576      +/-   ##
==========================================
+ Coverage   44.75%   44.78%   +0.02%     
==========================================
  Files         121      121              
  Lines        6998     6998              
==========================================
+ Hits         3132     3134       +2     
+ Misses       3620     3619       -1     
+ Partials      246      245       -1     

Impacted Files	Coverage Δ
x/wasm/keeper/keeper.go	81.30% <0.00%> (ø)
x/oracle/tally.go	91.89% <0.00%> (+5.40%)	⬆️