next.js

79d1b333 - [examples] Add on-demand revalidation to Contentful example (#39475)

[examples] Add on-demand revalidation to Contentful example (#39475) ## Feature - [x] 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 - [x] Documentation added - [ ] Telemetry added. In case of a feature if it's used or not. - [ ] Errors have helpful link attached, see `contributing.md` ## Changes Added in on-demand revalidation for Contentful example. Specifically, added the revalidate api path, a new environment variable which will contain the secret, and some additions to the README. Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>