Fix a whitespace issue with the man pages

There is what may actually be a mistake in our markup.  The problem is
in a situation like

<para>
 <command>FOO</command> is ...

there is strictly speaking a line break before "FOO".  In the HTML
output, this does not appear to be a problem, but in the man page
output, this shows up, so you get double blank lines at odd places.

So far, we have attempted to work around this with an XSL hack, but
that causes other problems, such as creating run-ins in places like

<acronym>SQL</acronym> <command>COPY</command>

So fix the problem properly by removing the extra whitespace.  I only
fixed the problems that affect the man page output, not all the
places.

doc/src/sgml/ref/create_table_as.sgml

@@ -183,8 +183,7 @@ CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } | UNLOGGED ] TABLE <replaceable
          </para>
         </listitem>
        </varlistentry>
-      </variablelist>
-     </para>
+      </variablelist></para>
     </listitem>
    </varlistentry>
 
@@ -291,8 +290,7 @@ PREPARE recentfilms(date) AS
   SELECT * FROM films WHERE date_prod &gt; $1;
 CREATE TEMP TABLE films_recent WITH (OIDS) ON COMMIT DROP AS
   EXECUTE recentfilms('2002-01-01');
-</programlisting>
-  </para>
+</programlisting></para>
  </refsect1>
 
  <refsect1>
@@ -319,8 +317,7 @@ CREATE TEMP TABLE films_recent WITH (OIDS) ON COMMIT DROP AS
     </listitem>
 
     <listitem>
-     <para>
-      <productname>PostgreSQL</> handles temporary tables in a way
+     <para><productname>PostgreSQL</> handles temporary tables in a way
       rather different from the standard; see
       <xref linkend="sql-createtable">
       for details.
@@ -341,8 +338,7 @@ CREATE TEMP TABLE films_recent WITH (OIDS) ON COMMIT DROP AS
       is an extension.
      </para>
     </listitem>
-   </itemizedlist>
-  </para>
+   </itemizedlist></para>
  </refsect1>
 
  <refsect1>