fix minor type in MPI_Comm_connect man page

Signed-off-by: Howard Pritchard <howardp@lanl.gov>

ompi/mpi/man/man3/MPI_Comm_connect.3in

@@ -13,7 +13,7 @@
 .SH C Syntax
 .nf
 #include <mpi.h>
-int MPI_Comm_connect(const gchar *\fIport_name\fP, MPI_Info \fIinfo\fP, int \fIroot\fP,
+int MPI_Comm_connect(const char *\fIport_name\fP, MPI_Info \fIinfo\fP, int \fIroot\fP,
 	MPI_Comm \fIcomm\fP, MPI_Comm *\fInewcomm\fP)
 
 .fi