chore(d1): update README for Preview

[Jolg42]

Closes https://github.com/prisma/team-orm/issues/1011

[github-actions]

size-limit report 📦

Path	Size
packages/client/runtime/library.js	177.48 KB (0%)
packages/client/runtime/library.d.ts	81 B (0%)
packages/client/runtime/binary.js	596.3 KB (0%)
packages/client/runtime/binary.d.ts	26 B (0%)
packages/client/runtime/edge.js	156.41 KB (0%)
packages/client/runtime/edge-esm.js	156.3 KB (0%)
packages/client/runtime/wasm.js	112.62 KB (0%)
packages/client/runtime/index-browser.js	33.77 KB (0%)
packages/client/runtime/index-browser.d.ts	89 B (0%)
packages/cli/build/index.js	2.73 MB (0%)
packages/client/prisma-client-0.0.0.tgz	2.89 MB (0%)
packages/cli/prisma-0.0.0.tgz	3.88 MB (0%)
packages/bundle-size/da-workers-libsql/output.tgz	863.76 KB (0%)
packages/bundle-size/da-workers-neon/output.tgz	941.69 KB (0%)
packages/bundle-size/da-workers-pg/output.tgz	963.11 KB (0%)
packages/bundle-size/da-workers-pg-worker/output.tgz	916.23 KB (0%)
packages/bundle-size/da-workers-planetscale/output.tgz	878.66 KB (0%)
packages/bundle-size/da-workers-d1/output.tgz	836.83 KB (0%)

[codspeed-hq]

CodSpeed Performance Report

Merging #23491 will improve performances by 35.57%

_{Comparing joel/d1-README (a3bb26b) with main (3d415f0)}

Summary

⚡ 1 improvements
✅ 2 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	joel/d1-README	Change
⚡	client generation 100 models with relations	41 s	30.2 s	+35.57%

[Jolg42]

We can probably update this after #23662