readme: ommit double quotes from connect_to usage example

[achmiral]

I don't know why, but when using double quotes, it throws MissionControl::Jobs::Errors::ResourceNotFound. I have checked the source code and done some debugging, but I couldn't find the solution. I'm fairly certain the culprit is in these lines.

mission_control-jobs/lib/mission_control/jobs/console/connect_to.rb

Lines 8 to 10 in 58893d9

	def execute(server_locator)
	server = MissionControl::Jobs::Server.from_global_id(server_locator)
	MissionControl::Jobs::Current.server = server

mission_control-jobs/lib/mission_control/jobs/server/serializable.rb

Lines 11 to 13 in 58893d9

	app_id, server_id = global_id.split(":")
	application = MissionControl::Jobs.applications[app_id] or raise MissionControl::Jobs::Errors::ResourceNotFound, "No application with id #{app_id} found"

• This PR also answer Can't connect to job server #230