[readme] fix typo in resolv.conf filename #749

Job	Run time
Cygwin nvm install	3m 2s
MSYS fail prefix nvm install	47s
MSYS nvm install (--lts)	1m 4s
MSYS nvm install (--default 12)	52s
MSYS nvm install (--no-progress 10)	1m 1s
WSL nvm install (Debian, --lts)	1m 52s
WSL nvm install (Debian, --lts, script)	1m 53s
WSL nvm install (Debian, 14)	2m 35s
WSL nvm install (Debian, 14, script)	3m 26s
WSL nvm install (Debian, 12)	2m 14s
WSL nvm install (Debian, 12, script)	4m 3s
WSL nvm install (Debian, 11)	1m 23s
WSL nvm install (Debian, 11, script)	1m 30s
WSL nvm install (Debian, 10)	2m 25s
WSL nvm install (Debian, 10, script)	2m 23s
WSL nvm install (Alpine, --lts)	34s
WSL nvm install (Alpine, --lts, script)	35s
WSL nvm install (Alpine, 14)	1m 8s
WSL nvm install (Alpine, 14, script)	1m 2s
WSL nvm install (Alpine, 12)	1m 1s
WSL nvm install (Alpine, 12, script)	40s
WSL nvm install (Alpine, 11)	1m 28s
WSL nvm install (Alpine, 11, script)	41s
WSL nvm install (Alpine, 10)	1m 18s
WSL nvm install (Alpine, 10, script)	1m 4s
WSL nvm install (Ubuntu-18.04, --lts)	2m 8s
WSL nvm install (Ubuntu-18.04, --lts, script)	2m 21s
WSL nvm install (Ubuntu-18.04, 14)	2m 17s
WSL nvm install (Ubuntu-18.04, 14, script)	4m 16s
WSL nvm install (Ubuntu-18.04, 12)	2m 50s
WSL nvm install (Ubuntu-18.04, 12, script)	5m 13s
WSL nvm install (Ubuntu-18.04, 11)	2m 24s
WSL nvm install (Ubuntu-18.04, 11, script)	4m 52s
WSL nvm install (Ubuntu-18.04, 10)	6m 58s
WSL nvm install (Ubuntu-18.04, 10, script)	5m 49s
nvm_windows	1s
	1h 19m 10s

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