docs: fix typos (#82503)

## Summary

Fix typos and spelling errors in various MDX documentation files to
improve clarity and consistency.

Documentation:
- Standardize 'cacheable' spelling across self-hosting guide
- Correct 'potentionally' to 'potentially' in image component references
- Fix 'unecessary' to 'unnecessary' in use-link-status guide

### Improving Documentation

- [x] Run `pnpm prettier-fix` to fix formatting issues before opening
the PR.
- [x] Read the Docs Contribution Guide to ensure your contribution
follows the docs guidelines:
https://nextjs.org/docs/community/contribution-guide

Co-authored-by: Joseph <[email protected]>

Author: JamBalaya56562

docs/01-app/02-guides/self-hosting.mdx

@@ -215,7 +215,7 @@ module.exports = {
 
 ## Usage with CDNs
 
-When using a CDN in front on your Next.js application, the page will include `Cache-Control: private` response header when dynamic APIs are accessed. This ensures that the resulting HTML page is marked as non-cachable. If the page is fully prerendered to static, it will include `Cache-Control: public` to allow the page to be cached on the CDN.
+When using a CDN in front on your Next.js application, the page will include `Cache-Control: private` response header when dynamic APIs are accessed. This ensures that the resulting HTML page is marked as non-cacheable. If the page is fully prerendered to static, it will include `Cache-Control: public` to allow the page to be cached on the CDN.
 
 If you don't need a mix of both static and dynamic components, you can make your entire route static and cache the output HTML on a CDN. This Automatic Static Optimization is the default behavior when running `next build` if dynamic APIs are not used.
 

docs/01-app/03-api-reference/02-components/image.mdx

@@ -739,7 +739,7 @@ module.exports = {
 }
 ```
 
-You can increase the TTL to reduce the number of revalidations and potentionally lower cost:
+You can increase the TTL to reduce the number of revalidations and potentially lower cost:
 
 ```js filename="next.config.js"
 module.exports = {

docs/01-app/03-api-reference/04-functions/use-link-status.mdx

@@ -194,7 +194,7 @@ export default function Layout({ children }) {
 
 ## Gracefully handling fast navigation
 
-If the navigation to a new route is fast, users may see an unecessary flash of the loading indicator. One way to improve the user experience and only show the loading indicator when the navigation takes time to complete is to add an initial animation delay (e.g. 100ms) and start the animation as invisible (e.g. `opacity: 0`).
+If the navigation to a new route is fast, users may see an unnecessary flash of the loading indicator. One way to improve the user experience and only show the loading indicator when the navigation takes time to complete is to add an initial animation delay (e.g. 100ms) and start the animation as invisible (e.g. `opacity: 0`).
 
 ```css filename="app/styles/global.css"
 .spinner {

docs/02-pages/04-api-reference/01-components/image-legacy.mdx

@@ -566,7 +566,7 @@ module.exports = {
 }
 ```
 
-You can increase the TTL to reduce the number of revalidations and potentionally lower cost:
+You can increase the TTL to reduce the number of revalidations and potentially lower cost:
 
 ```js filename="next.config.js"
 module.exports = {