Rust

Update links, add info about discord #361

Job	Run time
build-wasm-nostd	28s
build-wasm	4m 15s
check-all	39s
check	27s
check-alloc	17s
check-changelog	3s
check-doc	43s
check-nostd	17s
check-semver (generic-ec, all-features)	2m 41s
clippy	32s
check-semver (generic-ec, only-explicit-features)	2m 29s
clippy-nostd	16s
check-semver (generic-ec-core, all-features)	2m 28s
clippy-tests	42s
check-semver (generic-ec-core, only-explicit-features)	2m 20s
fmt	3s
test	1m 12s
check-semver (generic-ec-curves, all-features)	2m 37s
check-semver (generic-ec-curves, only-explicit-features)	2m 25s
check-semver (generic-ec-zkp, all-features)	2m 33s
check-semver (generic-ec-zkp, only-explicit-features)	2m 28s
	29m 55s

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