Add database-api to review list

Add database-api to list of projects that are in the list of
all documentation repositories for review

Change-Id: Ib7c62aba69e978128584f5df91790265834be7fe
Edits on Neutron Use-Cases

Fix [database] sql_connection - it's connection.
Adjust password usage with rest of guide.
Change some prompts for consistency.

Change-Id: If43a27a83927abf8fccc1041d51467aa12c267c4
Merge "Add database-api to review list"