Update `dioxus-core-macro` README as per #1448 #3831

Job	Run time
Check	8m 14s
Rustfmt	16s
Clippy	7m 22s
matrix_test (x86_64-pc-windows-msvc, windows-latest, 1.70.0, false, test, --all --tests)	9m 26s
Test Suite	16m 34s
matrix_test (x86_64-apple-darwin, macos-latest, 1.70.0, false, test, --all --tests)	9m 42s
matrix_test (aarch64-apple-ios, macos-latest, 1.70.0, false, build, --package dioxus-mobile)	2m 35s
matrix_test (aarch64-linux-android, ubuntu-latest, 1.70.0, true, build, --package dioxus-mobile)	3m 9s
	57m 18s

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