Some reference pages contained id attributes on refname elements.
These were apparently copied around from ancient times, but they don't
serve a purpose. FOP issues minor warnings about them. So it's
easiest to just remove them.
- id="clusterdb">clusterdb
+ clusterdb
cluster a PostgreSQL database
- id="postmaster-ref">postmaster
+ postmaster
PostgreSQL database server
- id="reindexdb">reindexdb
+ reindexdb
reindex a PostgreSQL database
- id="vacuumdb">vacuumdb
+ vacuumdb
garbage-collect and analyze a PostgreSQL database