Document alternative method to providing intelephense license key (#34502)
This PR updates the [Intelephense section in the
docs](https://zed.dev/docs/languages/php#intelephense) to include an
alternative way to provide the premium license key.
Release Notes:
- N/A
42b2b65241Stephen Samra committed on 7/16/2025, 6:14:18 AM· committed by GitHubparenta529103