minor updates to ABI README

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

Author: hppritcha

ompi/mpi/README_ABI.md

@@ -1,6 +1,6 @@
 # MPI-5 ABI support
 
-Last updated: November 2025
+Last updated: December 2025
 
 This README describes the current approach to supporting the MPI-5 
 Application Binary Interface (ABI).  The MPI ABI is described in 
@@ -129,7 +129,7 @@ The bindings framework parses the input argument types to the function
 and generates calls to appropriate converter methods to convert any MPI ABI
 constants in the arguments to OMPI ABI ones.  A wrapped version
 of the original function code is then called.  Any output arguments
-are converted from the OMPI ABI values back to MPI ABI ones.
+that require conversion are converted from the OMPI ABI values back to MPI ABI ones.
 This includes fields in MPI_Status objects which require conversion 
 and error return values from the wrapped code.