Minor typo: building vs built-in
Minor typo: building vs built-in

- Brewed OpenSSL may interfere with built-in software
drduh/OS-X-Yosemite-Security-and-Privacy-Guide,drduh/macOS-Security-and-Privacy-Guide,drduh/OS-X-Security-and-Privacy-Guide,ScheerMT/OS-X-Yosemite-Security-and-Privacy-Guide