[css3-text] add an example of text-justify:kashida

Author: kojiishi

css3-text/Overview.html

@@ -2134,6 +2134,15 @@ <h3 id=text-justify><span class=secno>7.3. </span> Justification Method:
     class=css>distribute</code>’
   </div>
 
+  <div class=figure id=fig-text-justify-kashida>
+   <p> <img alt="One possible example of rendering for text-justify: kashida"
+    class=example height=73 src=text-justify-kashida.png width=325>
+
+   <p class=caption>One possible example of rendering for ‘<a
+    href="#text-justify0"><code class=property>text-justify</code></a>’:
+    ‘<code class=css>kashida</code>’
+  </div>
+
   <dl>
    <dt><dfn id=auto2 title="text-justify:auto">‘<code
     class=css>auto</code>’</dfn>

css3-text/Overview.src.html

@@ -1564,6 +1564,13 @@ <h3 id="text-justify">
         <p class="caption">Values of 'text-justify': ''inter-word'', ''inter-cluster'', ''inter-ideograph'', and ''distribute''</p>
       </div>
 
+      <div class="figure" id="fig-text-justify-kashida">
+        <p>
+          <img alt="One possible example of rendering for text-justify: kashida"
+               class="example" src="text-justify-kashida.png" height="73" width="325"></p>
+        <p class="caption">One possible example of rendering for 'text-justify': ''kashida''</p>
+      </div>
+
     <dl>
       <dt><dfn title="text-justify:auto">''auto''</dfn></dt>
         <dd>The UA determines the justification algorithm to follow, based