Rephrase

* Re https://github.com/w3c/html/pull/1218/files#r169206182
* Re #1215

sections/semantics-grouping-content.include

@@ -42,10 +42,11 @@
   The <{p}> element should not be used when a more specific element, such as a list, is more appropriate.
 
   <div class="note">
-    Many elements whose typical rendering is a block, cannot be children of <{p}> elements.
-    When the parser finds them it automatically closes the <{p}> element - effectively inserting a <code>&lt;/p&gt;</code> tag.
-    This includes lists, tables, <a>heading content</a>, most <a>sectioning roots</a> and <a>sectioning content</a>, 
-    and <{form}>, <{fieldset}> and <{legend}> elements.
+    Some block elements cannot be children of <{p}> elements.
+    When the parser finds them, it automatically closes the <{p}> element - effectively inserting a
+    <code>&lt;/p&gt;</code> tag.
+    These elements are: <a>heading content</a>, most <a>sectioning roots</a> and <a>sectioning content</a>, 
+    <{form}>, <{fieldset}>, <{table}>, <{ol}>, <{ul}>, and <{legend}>.
   </div>
 
   <p class="note">