Fix indentation and remove useless wrapping para tag (#4982)

Affects files:
- `features/persistent-connections.xml`
- `reference/datetime/examples.xml`

Author: Marqitos

features/persistent-connections.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- $Revision$ -->
- <chapter xml:id="features.persistent-connections" xmlns="http://docbook.org/ns/docbook">
-  <title>Persistent Database Connections</title>
+<chapter xml:id="features.persistent-connections" xmlns="http://docbook.org/ns/docbook">
+ <title>Persistent Database Connections</title>
 
  <simplesect>
   <title>What are Persistent Connections?</title>
@@ -198,20 +198,18 @@
  </simplesect>
 
  <simplesect role="seealso" xml:id="persistent-connections.seealso">
-   &reftitle.seealso;
-   <para>
-    <simplelist>
-     <member><function>ibase_pconnect</function></member>
-     <member><function>oci_pconnect</function></member>
-     <member><function>odbc_pconnect</function></member>
-     <member><function>pfsockopen</function></member>
-     <member><function>pg_connect</function></member>
-     <member><link linkend="mysqli.persistconns">MySQLi and Persistent Connections</link></member>
-     <member><link linkend="pdo.connections">PDO Connection Management</link></member>
-    </simplelist>
-   </para>
-  </simplesect>
- </chapter>
+  &reftitle.seealso;
+  <simplelist>
+   <member><function>ibase_pconnect</function></member>
+   <member><function>oci_pconnect</function></member>
+   <member><function>odbc_pconnect</function></member>
+   <member><function>pfsockopen</function></member>
+   <member><function>pg_connect</function></member>
+   <member><link linkend="mysqli.persistconns">MySQLi and Persistent Connections</link></member>
+   <member><link linkend="pdo.connections">PDO Connection Management</link></member>
+  </simplelist>
+ </simplesect>
+</chapter>
 
 <!-- Keep this comment at the end of the file
 Local variables:

reference/datetime/examples.xml

@@ -14,8 +14,8 @@
    <example>
     <title>DateTimeImmutable::add/sub add intervals which cover elapsed time</title>
     <simpara>
-        Adding PT24H over a DST transition will appear to add 23/25 hours (for
-        most timezones).
+     Adding PT24H over a DST transition will appear to add 23/25 hours (for
+     most timezones).
     </simpara>
     <programlisting role="php">
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