fix typo in manpage

man/httperf.1

@@ -1076,7 +1076,7 @@ avg 6.45 connections/session
 4 7 4 ... 3 3 240
 .RE
 .PP 
-The line labeled ``Session rate'' shows the minium, average, and
+The line labeled ``Session rate'' shows the minimum, average, and
 maximum rate at which sessions completed (based on a 5 second sampling
 interval).  It also shows the standard deviation of the session
 completion rate.  The numbers in parentheses show how many sessions