[5.9] Minor grammar fix in readme.md (#5010)
[5.9] Minor grammar fix in readme.md (#5010)

* Fix grammar ('Boost *your* skills')

* Update readme.md

cbnuke/FilesCollection,hackel/laravel,hackel/laravel,slimkit/thinksns-plus,hackel/laravel,slimkit/thinksns-plus,cbnuke/FilesCollection