pgsql: doc: Fix up title case

doc: Fix up title case This fixes some instances that were missed in earlier processings and that now look a bit strange because they are inconsistent with nearby titles. Branch -- REL_12_STABLE Details --- https://git.postgresql.org/pg/commitdiff/4534a1e81039866f1a0c4326e0458031a8ef483e

pgsql: doc: Fix up title case

doc: Fix up title case This fixes some instances that were missed in earlier processings and that now look a bit strange because they are inconsistent with nearby titles. Branch -- REL_13_STABLE Details --- https://git.postgresql.org/pg/commitdiff/62340f8eca4c9d4e49097eaf0a341aca8450b56b

pgsql: doc: Fix up title case

doc: Fix up title case This fixes some instances that were missed in earlier processings and that now look a bit strange because they are inconsistent with nearby titles. Branch -- master Details --- https://git.postgresql.org/pg/commitdiff/7f055fba3fa99d807837a229967fd6c5dd720530 Modif