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Rename `threshold` repo to `docs` #1206

Job	Run time
contracts-deployment-dry-run	1m 8s
contracts-detect-changes	6s
contracts-slither	1m 37s
contracts-build-and-test	2m 52s
contracts-dapp-development-deployment-testnet	-1s
contracts-deployment-testnet	-1s
contracts-etherscan-verification	-1s
	5m 40s