README.md: link to NCC audit (#927) #65

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	2m 50s
build (1.65.0, wasm32-unknown-unknown)	2m 53s
build (stable, thumbv7em-none-eabi)	22s
build (stable, wasm32-unknown-unknown)	26s
cross (armv7-unknown-linux-gnueabihf, 1.65.0)	4m 19s
cross (armv7-unknown-linux-gnueabihf, stable)	1m 39s
cross (aarch64-unknown-linux-gnu, 1.65.0)	4m 15s
cross (aarch64-unknown-linux-gnu, stable)	1m 45s
cross (powerpc-unknown-linux-gnu, 1.65.0)	4m 20s
cross (powerpc-unknown-linux-gnu, stable)	1m 46s
doc	16s
test (i686-unknown-linux-gnu, 1.65.0, sudo apt update && sudo apt install gcc-multilib)	4m 30s
test (i686-unknown-linux-gnu, stable, sudo apt update && sudo apt install gcc-multilib)	1m 49s
test (x86_64-unknown-linux-gnu, 1.65.0)	4m 8s
test (x86_64-unknown-linux-gnu, stable)	1m 17s
	36m 35s

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