Tweak perl module six and aux files

Remove python2 remnants from six and make som minor text changes.
Remove legacy elements from lfs-xsl stylesheet.
Minor text change in pip3 xinclude file.

general/prog/six.xml

@@ -25,7 +25,7 @@
       <title>Introduction to Six Module</title>
 
       <para>
-        Six is a Python 2 and 3 compatibility library.
+        Six is a Python 2 to 3 compatibility library.
       </para>
 
       &lfs111_checked;
@@ -64,21 +64,21 @@
           </para>
         </listitem>
       </itemizedlist>
-
+<!--
       <bridgehead renderas="sect4">Six Dependencies</bridgehead>
 
       <bridgehead renderas="sect5">Recommended Dependencies</bridgehead>
       <para role="recommended">
         <xref linkend="python2"/>
       </para>
-
+-->
       <para condition="html" role="usernotes">
         User Notes: <ulink url="&blfs-wiki;/six"/>
       </para>
     </sect3>
 
     <sect3 role="installation">
-      <title>Installation of six</title>
+      <title>Installation of Six</title>
 <!--
       <note>
         <para>

stylesheets/lfs-xsl/xhtml/lfs-sections.xsl

@@ -153,11 +153,11 @@
     <!-- sect1info mode svn-keys:
            Self-made template to process SVN keywords found in sect1info. -->
   <xsl:template match="sect1info" mode="svn-keys">
-    <p class="updated">Last updated <!-- by
+    <!-- <p class="updated">Last updated --><!-- by
       <xsl:apply-templates select="othername" mode="svn-keys"/> -->
-      on
+    <!--  on
       <xsl:apply-templates select="date" mode="svn-keys"/>
-    </p>
+    </p> -->
   </xsl:template>
 
     <!-- othername mode svn-keys:

xincludes/pip3-cmd-explain.xml

@@ -28,7 +28,7 @@
     </para>
 
     <para>
-      <option>--find-links dest</option>: look for links to archives
+      <option>--find-links dest</option>: looks for links to archives
       such as wheel (.whl) files in the directory 
       <filename class="directory">dist</filename>.
     </para>