edit pass on T3,4,5, updated images

src/site/articles/index.html

 ---
 layout: default
 title: "Articles"
 description: "Read about the Dart language and tools with this collection of articles, style guides, and more."
 ---
 
 {% comment %}
 NOTE: Within each section, articles should be in chronological order
 (newest on top).
 {% endcomment %}
 
 <h1> Articles </h1>
 
 <p>
 Read these articles for insight into Dart programming topics.
 </p>
 
 <p>
-See also: <a href="/docs/tutorials/">Dart Tutorials (A Game of Darts)</a>
+See also: <a href="/docs/tutorials/">Dart Tutorials</a>
 </p>
 
 <div class="row">
   <div class="span6">
     <h2>Everyday Dart </h2>
     {% articles everyday-dart %}
     <h2>Performance</h2>
     {% articles performance %}
   </div>
   <div class="span6">
     <h2>Language Details</h2>
     {% articles language-details %}
   </div>
 </div>
 
 <div class="row">
   <div class="span6">
     <h2>Libraries and APIs</h2>
     {% articles libraries-and-apis %}
   </div>
   <div class="span6">
     <h2>Design Decisions</h2>
     {% articles design-decisions %}
   </div>
 </div>