Fix MPI_Comm_join template

Signed-off-by: Jake Tronge <[email protected]>

ompi/mpi/c/comm_join.c.in

@@ -148,7 +148,7 @@ static int ompi_socket_recv (int fd, char *buf, int len )
     return ret;
 }
 
-PROTOTYPE ERROR_CLASS MPI_Comm_join(INT fd, COMM_OUT intercomm)
+PROTOTYPE ERROR_CLASS comm_join(INT fd, COMM_OUT intercomm)
 {
 
     int rc;