When setting an invalid label on a table, the error message was
reporting an invalid label for a column.

This fixes a broken link in the README to the example root key
script loaded during server initialization.

Additionally, this updates the links to the PostgreSQL documentation
to use the "current" format instead of pointing to a specific version
(which, in this case, was pointed to v12).

Signed-off-by: Jonathan Katz <jonathan.katz@excoventures.com>

Signed-off-by: Jonathan Katz <jonathan.katz@excoventures.com>

Co-authored-by: Michel Pelletier <michelp@users.noreply.github.com>

* Doc updates testing notebook generation.

* randombytes api docs.

* hasing api docs.

* pwhash api docs

* hmac and secret key api docs.

* Add tap tests on pgsodium objects schema

* Update pgtap extension to 1.2.0 in tests

* Force empty search_path when check pgsodium schema

This fixes errors related to the object schema resolution.

* Fix the search_path again...

* Force pgsodium version during pgtap test generation

* Order privileges by names

This makes any change easier to spot

* add tap tests on types

* Add various checks on functions

Adding checks for: language, return type, volatility, strictiness,
security definer and function kind.

* Check the event trigger properties

* Add table indexes and constraints checks

* Forgot to update the number of checks