[docs] Update icons.md (#8709)
[docs] Update icons.md (#8709)

* Update icons.md

This is misleading because Expo does support SVGs.

* Update icons.md

Change using inline require to the file name string.
exponentjs/exponent,exponentjs/exponent,exponentjs/exponent,exponent/exponent,exponentjs/exponent,exponent/exponent,exponentjs/exponent,exponent/exponent,exponent/exponent,exponent/exponent,exponent/exponent,exponentjs/exponent,exponent/exponent,exponent/exponent,exponentjs/exponent,exponentjs/exponent,exponent/exponent,exponentjs/exponent