Update packages section in Python html docs

Updates given only Python 2.7, 3.2+ are now supported.
diff --git a/Doc/Manual/Python.html b/Doc/Manual/Python.html
index eee47f9..ff5ef29 100644
--- a/Doc/Manual/Python.html
+++ b/Doc/Manual/Python.html
@@ -5853,12 +5853,19 @@
 </pre>
 </div>
 
-<p>By default, SWIG would generate <tt>mod2.py</tt> proxy file with
+<p>By default, SWIG will generate <tt>mod2.py</tt> proxy file with
 <tt>import</tt> directive as in point 1. This can be changed with the
 <tt>-relativeimport</tt> command line option. The <tt>-relativeimport</tt> instructs
-SWIG to organize imports as in point 2 (for Python < 2.7.0) or as in point 4
-for Python 2.7.0 and newer. This is a check done at the time the module is
-imported. In short, if you have
+SWIG to organize imports as in point 4 for Python 2.7.0 and newer.
+</p>
+
+<p>
+<b>Compatibility Note:</b> Versions of SWIG prior to SWIG-4.0.0 supported Python &lt; 2.7.0
+and would organize the imports as in point 2 if an older version of Python was detected at runtime.
+</p>
+
+<p>
+In short, if you have
 <tt>mod2.i</tt> and <tt>mod3.i</tt> as above, then without
 <tt>-relativeimport</tt> SWIG will write</p>
 
@@ -5873,13 +5880,8 @@
 
 <div class="targetlang">
   <pre>
-from sys import version_info
-if version_info &gt;= (2, 7, 0):
-    from . import pkg2
-    import pkg1.pkg2.mod3
-else:
-    import pkg2.mod3
-del version_info
+from . import pkg2
+from .pkg2 import mod3
 </pre>
 </div>
 
@@ -5917,7 +5919,7 @@
 </pre>
 </div>
 
-<p>at the very beginning of his proxy <tt>*.py</tt> file. In SWIG, it may be
+<p>at the very beginning of your proxy <tt>*.py</tt> file. In SWIG, it may be
 accomplished with <tt>%pythonbegin</tt> directive as follows:</p>
 
 <div class="code">
@@ -6129,8 +6131,8 @@
 </p>
 
 <p>
-The pure Python module needs to load the C/C++ module in order to link
-to the wrapped C/C++ methods.   To do this it must make some assumptions
+The pure Python module needs to load the C/C++ module in order to call
+the wrapped C/C++ methods.   To do this it must make some assumptions
 about what package the C/C++ module may be located in.  The approach the
 pure Python module uses to find the C/C++ module is as follows:
 </p>