trace-cmd: trace.dat file format doc fixes Typo/grammo corrections to trace-cmd.dat.5.txt: Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> LKML-Reference: <20100408155718.8673c823.randy.dunlap@oracle.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>