doc: prettify OPAL_CHECK_TOKEN
+.. _OPAL_CHECK_TOKEN:
+
OPAL_CHECK_TOKEN
================
+.. code-block:: c
+
+ #define OPAL_CHECK_TOKEN 80
+
+ int64_t opal_check_token(uint64_t token);
+
This OPAL call allows the host OS to determine if a particular OPAL call is present
on a system. This allows for simple compatibility between OPAL versions and different
OPAL implementations/platforms.
