Fix misspellings

Amit Langote and Thom Brown

doc/src/sgml/ddl.sgml

@@ -1553,7 +1553,7 @@ REVOKE ALL ON accounts FROM PUBLIC;
    both.  The commands available are <literal>ALL</literal>,
    <literal>SELECT</>, <literal>INSERT</>, <literal>UPDATE</>, and
    <literal>DELETE</>.  Multiple roles can be assigned to a given policy
-   and normal role membership and inheiritance rules apply.
+   and normal role membership and inheritance rules apply.
   </para>
 
   <para>

src/test/regress/expected/updatable_views.out

@@ -2017,7 +2017,7 @@ SELECT * FROM base_tbl;
 
 DROP TABLE base_tbl CASCADE;
 NOTICE:  drop cascades to view rw_view1
--- security barrier view based on inheiritance set
+-- security barrier view based on inheritance set
 CREATE TABLE t1 (a int, b float, c text);
 CREATE INDEX t1_a_idx ON t1(a);
 INSERT INTO t1

src/test/regress/sql/updatable_views.sql

@@ -958,7 +958,7 @@ SELECT * FROM base_tbl;
 
 DROP TABLE base_tbl CASCADE;
 
--- security barrier view based on inheiritance set
+-- security barrier view based on inheritance set
 CREATE TABLE t1 (a int, b float, c text);
 CREATE INDEX t1_a_idx ON t1(a);
 INSERT INTO t1