docs: update installation section

[minsoo-web]

I update installation section with vitepress api

• combine npm, yarn, pnpm command with code-group API

preview

[vercel]

@minsoo-web is attempting to deploy a commit to the Toss Team on Vercel.

A member of the Team first needs to authorize it.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (02f14b3) to head (7edcdb2).

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #102   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           57        57           
  Lines          311       311           
  Branches        37        37           
=========================================
  Hits           311       311           

[codspeed-hq]

CodSpeed Performance Report

Merging #102 will degrade performances by 81.21%

_{Comparing minsoo-web:docs/install-section (7edcdb2) with main (02f14b3)}

Summary

⚡ 2 improvements
❌ 5 regressions
✅ 91 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	minsoo-web:docs/install-section	Change
⚡	lodash	343 µs	49.3 µs	×7
❌	lodash/intersectionBy	319.4 µs	495.9 µs	-35.59%
❌	lodash/isNil	35.7 µs	190.2 µs	-81.21%
❌	lodash/union	75.8 µs	353.5 µs	-78.55%
❌	lodash/unionBy	75.7 µs	229.3 µs	-67.01%
⚡	es-toolkit/uniqBy	14.8 ms	13.1 ms	+12.36%
❌	lodash/zip	242.4 µs	360 µs	-32.68%

[raon0211]

Thanks!