"Command Read/Write" section has two DataByte* subsections describing command bytes format. Add markup to these subsection heading texts. Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.com>