fix typo

openpkg/rpmtool

@@ -177,7 +177,7 @@ eval `echo $arg_spec |\
 eval `echo h.$opt_spec |\
       sed -e 's/\([a-zA-Z0-9]\)\([.:+]\)/opt_MODE_\1=\2;/g'`
 
-#   interate over argument line
+#   iterate over argument line
 opt_PREV=''
 while [ $# -gt 0 ]; do
     #   special option stops processing