CI step to catch & fix common casing issues.

[BelfordZ]

example of PR comment that illustrates the issue well:
#323 (review)

checks:

• [] any case and spacing of the words json+schema converted into an internally-linked JSON-Schema
• [] any case and spacing of the words open + rpc + document converted into an internally-linked OpenRPC Document

Plz add suggestions to this list

[stale]

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