chore: remove "Essential" from name of Angular plugin

[tiffafoo]

Thanks for contributing the Netlify plugins directory!

Are you adding a plugin or updating one?

• Adding a plugin
• Updating a plugin

Have you completed the following?

• Read and followed the plugin author guidelines.
• Included all required fields in your entry.
• Tested the plugin locally and on Netlify, using the plugin version stated in your entry.

Test plan
Please add a link to a successful public deploy log using the stated version of the plugin. Include any other context reviewers might need for testing.

This was requested by @MelanieCrissey. I wasn't sure if this needed a version bump or not 🤔

[erezrokah]

@tiffanosaurus, you should merge this with type feat: or fix: to trigger a new release