Rewrite platform support section #21

Job	Run time
darwin (macos-13)	27s
linux-native (gnu)	1s
darwin (macos-15)	27s
lint (panic)	14s
linux-native (musl)	1s
linux-cross (aarch64-linux-android)	26s
lint (itanium)	13s
linux-cross (arm-linux-androideabi)	27s
lint (seh)	14s
linux-cross (armv7-linux-androideabi)	26s
miri-linux (x86_64-unknown-linux-gnu)	1s
test_stable	1s
linux-cross (arm-unknown-linux-gnueabi)	27s
miri-linux (i686-unknown-linux-gnu)	1s
valgrind	1s
linux-cross (arm-unknown-linux-gnueabihf)	27s
miri-linux (powerpc64-unknown-linux-gnu)	1s
linux-cross (arm-unknown-linux-musleabi)	26s
windows (x86_64, msvc)	1s
linux-cross (arm-unknown-linux-musleabihf)	28s
windows (x86_64, gnu)	1s
linux-cross (armv7-unknown-linux-gnueabihf)	28s
windows (i686, msvc)	1s
linux-cross (i686-unknown-linux-gnu)	26s
windows (i686, gnu)	1s
linux-cross (i686-unknown-linux-musl)	26s
linux-cross (loongarch64-unknown-linux-gnu)	27s
linux-cross (loongarch64-unknown-linux-musl)	28s
linux-cross (mips64-unknown-linux-gnuabi64)	25s
linux-cross (mips64el-unknown-linux-gnuabi64)	26s
linux-cross (powerpc64-unknown-linux-gnu)	1s
linux-cross (powerpc64le-unknown-linux-gnu)	25s
linux-cross (riscv64gc-unknown-linux-gnu)	1s
linux-cross (s390x-unknown-linux-gnu)	1s
linux-cross (sparc64-unknown-linux-gnu)	1s
	8m 28s

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