Fix geo framework registry table example

What does this MR do?

This MR updates our geo documentation when adding a new registry table.

It follows our database guidelines to make sure we always use text column over string with a predefined limit.

It also cleans up some extra spaces to prevent such rubocop linting errors from happening in the future 👮

Why are we doing this?

Does this MR meet the acceptance criteria?

Conformity

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