Linked GraphQL docs output

What does this MR do?

This improves our GraphQL documentation by linking mentions of types to their anchors.

In order to do this, we also need to list the scalar types, which includes all the new Global ID types, finally exposing a missing part of the schema.

We now no-longer need the hacky array workaround, which was confusing and did not resemble any other syntax for parameterising arrays.

Screenshots (strongly suggested)

Does this MR meet the acceptance criteria?

Conformity

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