Mark lsdyna_operators example as requiring DPF 6.1 (#888)

Author: PProfizi

examples/01-transient_analyses/02-lsdyna_operators.py

@@ -6,6 +6,11 @@
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 This example provides an overview of the LS-DYNA results providers.
+
+.. note::
+    This example requires DPF 6.1 (ansys-dpf-server-2023-2-pre0) or above.
+    For more information, see :ref:`ref_compatibility`.
+
 """
 
 import matplotlib.pyplot as plt