doc: clarify "state" table reference in tutorial

Reported-by: Vyacheslav Shablistyy
Discussion: https://postgr.es/m/159586122762.680.1361378513036616007@wrigleys.postgresql.org

Backpatch-through: 9.5

diff --git a/doc/src/sgml/advanced.sgml b/doc/src/sgml/advanced.sgml
index f6c4627c3e0f7ab0c3fd830f22665bfc46a55e05..d77312600f7b6bd2e52208604c8977c8fa9d6ebb 100644 (file)
--- a/doc/src/sgml/advanced.sgml
+++ b/doc/src/sgml/advanced.sgml
@@ -628,8 +628,9 @@ CREATE TABLE capitals (
     parent, cities.  The
     type of the column name is
     text, a native PostgreSQL
-    type for variable length character strings.  State capitals have
-    an extra column, state, that shows their state.  In
+    type for variable length character strings.  The
+    capitals table has
+    an extra column, state, which shows their states.  In
     PostgreSQL, a table can inherit from
     zero or more other tables.