h2load: Update doc

src/h2load.cc

@@ -1081,7 +1081,7 @@ Options:
               Post FILE to  server.  The request method  is changed to
               POST.
   -r, --rate=<N>
-              Specified  the  fixed  rate  at  which  connections  are
+              Specifies  the  fixed  rate  at  which  connections  are
               created.   The   rate  must   be  a   positive  integer,
               representing the  number of  connections to be  made per
               second.  When the rate is 0,  the program will run as it
@@ -1091,13 +1091,13 @@ Options:
               Specifies  the total  number of  connections to  create.
               The  total  number of  connections  must  be a  positive
               integer.  On each connection, -m requests are made.  The
-              test stops once as soon as the N connections have either
-              completed or failed.  When  the number of connections is
-              0, the program will run as it normally does, creating as
-              many connections  as it  needs in order  to make  the -n
-              requests specified.   The default value for  this option
-              is 0.  The -n option is not required if the -C option is
-              being used.
+              test  stops once  as soon  as the  <N> connections  have
+              either  completed   or  failed.   When  the   number  of
+              connections is  0, the program  will run as  it normally
+              does, creating as many connections  as it needs in order
+              to make  the -n  requests specified.  The  default value
+              for this option is 0.  The  -n option is not required if
+              the -C option is being used.
   -v, --verbose
               Output debug information.
   --version   Display version information and exit.