Fix typo in image-optimization.md

[wesleytian]

Either use avoid or prevent as verb, but not both.

[ijjk]

Stats from current PR

Default Server Mode (Decrease detected ✓)

General

	vercel/next.js canary	wesleytian/next.js patch-1	Change
buildDuration	9.8s	9.9s	⚠️ +127ms
nodeModulesSize	85 MB	85 MB	✓

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	wesleytian/next.js patch-1	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.118	2.146	⚠️ +0.03
/ avg req/sec	1180.5	1164.77	⚠️ -15.73
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.229	1.28	⚠️ +0.05
/error-in-render avg req/sec	2034.08	1952.75	⚠️ -81.33

Client Bundles (main, webpack, commons)

	vercel/next.js canary	wesleytian/next.js patch-1	Change
677f882d2ed8..8b6e.js gzip	12.8 kB	12.8 kB	✓
framework.HASH.js gzip	39 kB	39 kB	✓
main-90b3d5a..55ad.js gzip	6.54 kB	6.54 kB	✓
webpack-e067..f178.js gzip	751 B	751 B	✓
Overall change	59 kB	59 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	wesleytian/next.js patch-1	Change
polyfills-4b..e242.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	wesleytian/next.js patch-1	Change
_app-7231d4b..5856.js gzip	1.28 kB	1.28 kB	✓
_error-fca3d..2eb1.js gzip	3.44 kB	3.44 kB	✓
hooks-d4591d..e7c2.js gzip	887 B	887 B	✓
index-17468f..5d83.js gzip	227 B	227 B	✓
link-db223d9..dbd7.js gzip	1.61 kB	1.61 kB	✓
routerDirect..924c.js gzip	284 B	284 B	✓
withRouter-7..c13d.js gzip	284 B	284 B	✓
Overall change	8.01 kB	8.01 kB	✓

Client Build Manifests

	vercel/next.js canary	wesleytian/next.js patch-1	Change
_buildManifest.js gzip	321 B	321 B	✓
Overall change	321 B	321 B	✓

Rendered Page Sizes

	vercel/next.js canary	wesleytian/next.js patch-1	Change
index.html gzip	614 B	614 B	✓
link.html gzip	621 B	621 B	✓
withRouter.html gzip	608 B	608 B	✓
Overall change	1.84 kB	1.84 kB	✓

---

Serverless Mode

General

	vercel/next.js canary	wesleytian/next.js patch-1	Change
buildDuration	11.6s	11.6s	-35ms
nodeModulesSize	85 MB	85 MB	✓

Client Bundles (main, webpack, commons)

	vercel/next.js canary	wesleytian/next.js patch-1	Change
677f882d2ed8..8b6e.js gzip	12.8 kB	12.8 kB	✓
framework.HASH.js gzip	39 kB	39 kB	✓
main-90b3d5a..55ad.js gzip	6.54 kB	6.54 kB	✓
webpack-e067..f178.js gzip	751 B	751 B	✓
Overall change	59 kB	59 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	wesleytian/next.js patch-1	Change
polyfills-4b..e242.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	wesleytian/next.js patch-1	Change
_app-7231d4b..5856.js gzip	1.28 kB	1.28 kB	✓
_error-fca3d..2eb1.js gzip	3.44 kB	3.44 kB	✓
hooks-d4591d..e7c2.js gzip	887 B	887 B	✓
index-17468f..5d83.js gzip	227 B	227 B	✓
link-db223d9..dbd7.js gzip	1.61 kB	1.61 kB	✓
routerDirect..924c.js gzip	284 B	284 B	✓
withRouter-7..c13d.js gzip	284 B	284 B	✓
Overall change	8.01 kB	8.01 kB	✓

Client Build Manifests

	vercel/next.js canary	wesleytian/next.js patch-1	Change
_buildManifest.js gzip	321 B	321 B	✓
Overall change	321 B	321 B	✓

Serverless bundles

	vercel/next.js canary	wesleytian/next.js patch-1	Change
_error.js	996 kB	996 kB	✓
404.html	2.67 kB	2.67 kB	✓
hooks.html	1.92 kB	1.92 kB	✓
index.js	996 kB	996 kB	✓
link.js	1.05 MB	1.05 MB	✓
routerDirect.js	1.04 MB	1.04 MB	✓
withRouter.js	1.04 MB	1.04 MB	✓
Overall change	5.13 MB	5.13 MB	✓

Commit: 2e254b3