The essence of the Ansible writing style is short sentences that flow naturally together. Mix up sentence structures. Vary sentence subjects. Address the reader directly. Ask a question. And when the reader adjusts to the pace of shorter sentences, write a longer one.
Use the active voice (“Start Linuxconf by typing...”) rather than passive (“Linuxconf can be started by typing...”) whenever possible. Active voice makes for more lively, interesting reading. Also avoid future tense (or using the term “will”) whenever possible For example, future tense (“The screen will display...”) does not read as well as an active voice (“The screen displays”). Remember, the users you are writing for most often refer to the documentation while they are using the system, not after or in advance of using the system.