link to main sqlite and postgres docs

Author: dantownsend

docs/src/piccolo/getting_started/database_support.rst

@@ -3,8 +3,9 @@
 Database Support
 ================
 
-Postgres is the primary database which Piccolo was designed for.
+`Postgres <https://www.postgresql.org/>`_ is the primary database which Piccolo
+was designed for.
 
-Limited SQLite support is available, mostly to enable tooling like the
-playground. Postgres is the only database we recommend for use in production
-with Piccolo.
+Limited `SQLite <https://www.sqlite.org/index.html>`_ support is available,
+mostly to enable tooling like the :ref:`playground <Playground>`. Postgres is the only database we
+recommend for use in production with Piccolo.