Update documentation for manipulations

[jamieconnor]

Can we update the documentation for the manipulations page?

Now that Enums are being used from Spatie Image they are being used for manipulations differently. Just as a note this could be considered a breaking change for people upgrading.

Currently it is looking like this

$yourModel
   ->addMedia($pathToFile)
   ->withManipulations([
      '*' => ['orientation' => '90'],
      'thumb' => ['filter' => 'greyscale'],
   ]);

it should be this

$yourModel
   ->addMedia($pathToFile)
   ->withManipulations([
      '*' => ['orientation' => ['orientation' => '90']],
      'thumb' => ['greyscale' => []],
   ]);

I've got a PR for this, do I need to be a contributer to create a PR?

This relates to issue #3568

[freekmurze]

Feel free to open a PR :thumbnail