magma: fix typos (#506) #924

Job	Run time
test (stable)	33s
build (1.85.0, wasm32-unknown-unknown)	17s
test (1.85.0)	25s
build (1.85.0, thumbv7em-none-eabi)	16s
build (stable, wasm32-unknown-unknown)	11s
build (stable, thumbv7em-none-eabi)	21s
minimal-versions	0s
	2m 3s

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