"See Specific Usage" description convention enforcement

[mlmitch]

Discussing https://github.com/ocsf/ocsf-schema/pull/1146 during the community call brought up the possibility of enforcing the "See Specific Usage" convention more rigorously. The server already emits a warning if descriptions with "See Specific Usage" aren't overridden in their specific usage.

The assertion is that enums with only the default "0"/"99" values defined in dictionary.json should have "See Specific Usage" in their description. So an additional check should be added to ensure non-specific enums have this string in their description.