docs: update `radroots-app-wasm` readme - field_ios - In-the-field app for Radroots on iOS

commit c0c545d257a9958fb8c21a395fc0d495168d4651
parent 9b7202e233947b71c28d1586b05f8c2e1acb3b98
Author: triesap <tyson@radroots.org>
Date:   Sun,  1 Mar 2026 15:14:33 +0000

docs: update `radroots-app-wasm` readme

	field_ios In-the-field app for Radroots on iOS git clone https://radroots.dev/git/field_ios.git
	Log \| Files \| Refs \| README \| LICENSE