README: fix flake example #220

Job	Run time
prepare-n-o-d	1m 9s
prepare-n-o-d	1m 9s
prepare-n-o-d	1m 9s
prepare-n-o-d	1m 9s
prepare-droidctl	49s
prepare-droidctl	49s
prepare-droidctl	49s
prepare-droidctl	49s
prepare-avd (29)	24s
prepare-avd (29)	24s
prepare-avd (29)	24s
prepare-avd (29)	24s
emulate (29, android_integration)	8m 15s
emulate (29, android_integration)	7m 2s
emulate (29, android_integration)	7m 2s
emulate (29, android_integration)	7m 2s
emulate (29, bootstrap_flakes)	8m 0s
emulate (29, bootstrap_flakes)	8m 0s
emulate (29, bootstrap_flakes)	8m 0s
emulate (29, bootstrap_flakes)	8m 0s
emulate (29, bootstrap_channels)	3m 51s
emulate (29, bootstrap_channels)	3m 51s
emulate (29, bootstrap_channels)	5m 4s
emulate (29, bootstrap_channels)	5m 4s
emulate (29, poke_around)	8m 11s
emulate (29, poke_around)	8m 11s
emulate (29, poke_around)	8m 11s
emulate (29, poke_around)	7m 9s
emulate (29, test_channels_uiautomator)	12m 56s
emulate (29, test_channels_uiautomator)	12m 56s
emulate (29, test_channels_uiautomator)	12m 56s
emulate (29, test_channels_uiautomator)	12m 56s
emulate (29, test_channels_shell)	13m 19s
emulate (29, test_channels_shell)	13m 19s
emulate (29, test_channels_shell)	13m 19s
emulate (29, test_channels_shell)	13m 19s
	3h 45m 21s

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