examples: fix typos in cms-agilitycms (#82504)
## Summary
Correct spelling errors in the cms-agilitycms example, including the
image prop spelling and dependency imports.
Bug Fixes:
- Fix misspelled intersectionTreshold prop to intersectionThreshold in
the Image component and its useInView configuration
Enhancements:
- Rename dependancies.ts to dependencies.ts and update
requireComponentDependancyByName to requireComponentDependencyByName
across API and component imports
### Adding or Updating Examples
- [x] The "examples guidelines" are followed from our contributing doc
https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md
- [x] Make sure the linting passes by running `pnpm build && pnpm lint`.
See
https://github.com/vercel/next.js/blob/canary/contributing/repository/linting.md
Co-authored-by: Joseph <joseph.chamochumbi@vercel.com>
