cookbook: Tweak so that videos sit inside a paragraph for better spacing

doc/common/cookbook.xsl

@@ -3,6 +3,7 @@
   <xsl:include href="ref-html-style.xsl"/>
 
   <xsl:template match="inlinemediaobject" priority="100">
+    <p>
       <video controls="controls">
         <xsl:attribute name="src"><xsl:value-of select="videoobject/videodata/@fileref"/></xsl:attribute>
         <!-- fallback link to video for non-HTML 5 browsers -->
@@ -13,6 +14,7 @@
           <xsl:apply-templates select="alt"/>
         </a>
       </video>
+    </p>
   </xsl:template>
 
 </xsl:stylesheet>