chore: update pr template (#1358)

Author: antongolub

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,11 +1,15 @@
 <!-- It's a good idea to open an issue first for discussion. -->
 
-Fixes #<number_goes_here>
+Fixes #issue / suggests an improvement
 
 <!-- Usage demo -->
-```js
+```ts
+import {$} from 'zx'
 
 ```
 
-- [ ] Tests pass
-- [ ] Appropriate changes to README are included in PR
+- [ ] Tests pass. I've run `npm test` before submitting
+- [ ] Bundles updated. I've run `npm build` before committing
+- [ ] Appropriate changes to `docs` attached
+- [ ] Follows [Code of Conduct](https://github.com/google/zx?tab=coc-ov-file)
+- [ ] This PR is not a completely synthetic proposal generated by AI