Update rustfmt config (#2297) #1147

Job	Run time
set-image	1s
clippy	23m 17s
dylint	14m 16s
check (STD)	16m 16s
clippy-examples (STD)	23m 3s
check (WASM)	11m 10s
clippy-examples (WASM)	13m 55s
fmt	11m 24s
check (RISCV)	11m 47s
spellcheck	9m 41s
test (ink)	20m 19s
build (STD)	18m 45s
test (linting)	14m 3s
build (WASM)	11m 9s
docs	18m 4s
codecov	23m 31s
examples-test (1)	9m 34s
examples-custom-test	25m 55s
examples-test (2)	14m 25s
examples-test (3)	9m 12s
examples-test (4)	14m 5s
examples-test (5)	11m 17s
examples-test (6)	9m 6s
examples-docs	14m 19s
examples-contract-build (WASM, 1)	17m 36s
examples-contract-build (WASM, 2)	18m 36s
examples-contract-build (WASM, 3)	19m 7s
examples-contract-build (WASM, 4)	16m 34s
examples-contract-build (RISCV, 1)	13m 21s
fuzz	11m 10s
measurements / contract-sizes	0s
	7h 24m 58s

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