Remove brackets for ndims for c++ doc of Cart_create

Signed-off-by: Benoît Legat <benoit.legat@gmail.com>

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

@@ -41,7 +41,7 @@ MPI_Cart_create(\fIcomm_old\fP, \fIndims\fP, \fIdims\fP, \fIperiods\fP, \fIreord
 .SH C++ Syntax
 .nf
 #include <mpi.h>
-Cartcomm Intracomm.Create_cart(int[] \fIndims\fP, int[] \fIdims\fP[],
+Cartcomm Intracomm.Create_cart(int \fIndims\fP, int[] \fIdims\fP[],
 	const bool \fIperiods\fP[], bool \fIreorder\fP) const
 
 .fi