Update license field following SPDX 2.1 license expression standard

packages/mobile/Cargo.toml

@@ -7,7 +7,7 @@ description = "Mobile-compatible renderer for Dioxus"
 repository = "https://github.com/DioxusLabs/dioxus/"
 homepage = "https://dioxuslabs.com/docs/0.3/guide/en/getting_started/mobile.html"
 keywords = ["dom", "ui", "gui", "react"]
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
 dioxus-desktop = { workspace = true }