man: Remove unnecessary spaces in front of parameters.

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

@@ -19,7 +19,7 @@ C Syntax
 .SH Fortran Syntax
 .nf
     INCLUDE 'mpif.h'
-    MPI_FILE_READ(\fI FH\fP, \fI BUF\fP, \fICOUNT\fP,
+    MPI_FILE_READ(\fIFH\fP, \fIBUF\fP, \fICOUNT\fP,
     	      \fI DATATYPE\fP, \fISTATUS\fP, \fIIERROR\fP)
 	 <type>         BUF(*)
     	 INTEGER	FH, COUNT, DATATYPE, STATUS(MPI_STATUS_SIZE),