v4: Change input group validation examples (#30180)
v4: Change input group validation examples (#30180)

* Change input group examples

* Update forms.md

* Update site/docs/4.4/components/forms.md

Co-authored-by: XhmikosR <b60f67e10123951b393d9ba15dcf79efc14744bb@gmail.com>
Co-authored-by: Mark Otto <12d1534cbab533fa770a644b94441a210fc71171@gmail.com>
Co-authored-by: Martijn Cuppens <eb1e95cd7406bd48b9f875e0ae2b2d93fd22c202@gmail.com>
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