fix typo in sdmmc.rs #1404

	on:
	push:
	branches: master
	pull_request:
	merge_group:

	name: Continuous integration

	jobs:
	ci:
	name: CI
	runs-on: ubuntu-latest
	needs: [check]
	if: always()
	steps:
	- name: Done
	run: jq --exit-status 'all(.result == "success")' <<< '${{ toJson(needs) }}'

	check:
	runs-on: ubuntu-latest
	strategy:
	matrix: # All permutations of {rust, mcu}
	rust:
	- 1.65.0 # MSRV
	- stable
	mcu:
	- stm32h743
	- stm32h753
	- stm32h743v
	- stm32h753v
	- stm32h747cm7
	- stm32h7b3
	- stm32h7b0
	- stm32h735
	env: # Peripheral Feature flags
	FLAGS: rt,xspi,sdmmc,sdmmc-fatfs,fmc,usb_hs,rtc,ethernet,ltdc,crc,rand,can,defmt

	steps:
	- uses: actions/checkout@v2
	- name: Cache cargo registry and index
	uses: actions/cache@v2
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.toml') }}
	- name: Cache cargo build
	uses: actions/cache@v2
	with:
	path: target
	key: ${{ runner.os }}-target-${{ matrix.rust }}-${{ hashFiles('/Cargo.toml') }}-memory-${{ hashFiles('/memory.x') }}
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: ${{ matrix.rust }}
	target: thumbv7em-none-eabihf
	override: true
	- uses: actions-rs/cargo@v1
	with:
	use-cross: true
	command: build
	args: --verbose --release --examples --target thumbv7em-none-eabihf --features ${{ matrix.mcu }},${{ env.FLAGS }}
	- uses: actions-rs/cargo@v1
	with:
	command: test
	args: --lib --target x86_64-unknown-linux-gnu --features ${{ matrix.mcu }},${{ env.FLAGS }}

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