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 9ec389dda1b818b585f2d26e82fc0bf3d4ccc587..1586021c2e756f5d91a58521f166adc20b70f055 100644 (file)
--- a/doc/src/sgml/advanced.sgml
+++ b/doc/src/sgml/advanced.sgml
@@ -629,8 +629,9 @@ CREATE TABLE capitals (
     <firstterm>parent</firstterm>, <classname>cities</classname>.  The
     type of the column <structfield>name</structfield> is
     <type>text</type>, a native <productname>PostgreSQL</productname>
-    type for variable length character strings.  State capitals have
-    an extra column, <structfield>state</>, that shows their state.  In
+    type for variable length character strings.  The
+    <classname>capitals</> table has
+    an extra column, <structfield>state</>, which shows their states.  In
     <productname>PostgreSQL</productname>, a table can inherit from
     zero or more other tables.
    </para>