Update miniapps/elasticity/kernels/kernel_helpers.hpp
Update miniapps/elasticity/kernels/kernel_helpers.hpp

Co-authored-by: Tzanio Kolev <605de794f7610ce2ffe19cf6a1bb4382097b06d1@llnl.gov>
mfem/mfem,mfem/mfem,mfem/mfem,mfem/mfem,mfem/mfem