message: Update install requirements/options for Ginkgo
diff: @@ -601,10 +601,11 @@ The specific libraries and their options are:
  Versions: STRUMPACK >= 3.0.0.
  - Ginkgo (optional), used when MFEM_USE_GINKGO = YES. Note that Ginkgo needs a
  - C++ compiler that supports the C++-11 standard. For additional requirements
  - and dependencies of specific modules see the Ginkgo webpage below.
  + C++ compiler that supports the C++-14 standard. For additional requirements
  + and dependencies of specific modules, see the Ginkgo webpage below.
  URL: https://ginkgo-project.github.io
  - Options: GINKGO_OPT (Not used), GINKGO_LIB.
  + Options: GINKGO_OPT, GINKGO_LIB, GINKGO_DIR, GINKGO_BUILD_TYPE (Release or Debug).
  + Versions: Ginkgo >= 1.4.0.
  - AmgX (optional), used when MFEM_USE_AMGX = YES.
  URL: https://github.com/NVIDIA/AMGX
  