chore(example): update preact links in examples (#34233)

## Bug

- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`

## Feature

- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`

## Documentation / Examples

- [ ] Make sure the linting passes by running `yarn lint`

examples/data-fetch/pages/preact-stars.js

@@ -12,7 +12,7 @@ function PreactStars({ stars }) {
 }
 
 export async function getStaticProps() {
-  const res = await fetch('https://api.github.com/repos/developit/preact')
+  const res = await fetch('https://api.github.com/repos/preactjs/preact')
   const json = await res.json()
 
   return {

examples/with-vercel-fetch/pages/preact.js

@@ -13,7 +13,7 @@ export default function Preact({ stars }) {
 }
 
 export async function getStaticProps() {
-  const res = await fetch('https://api.github.com/repos/developit/preact')
+  const res = await fetch('https://api.github.com/repos/preactjs/preact')
   const json = await res.json() // better use it inside try .. catch
   return {
     props: { stars: json.stargazers_count },