Remove a superflous parenthesis in the "The Structure Of A Design Pat…

…tern" chapter.

book/index.html

@@ -295,7 +295,7 @@ <h1 id="designpatternstructure">
   <li><strong>Solution</strong> – a description of how the user&rsquo;s problem is being solved in an understandable list of steps and perceptions. </li>
   <li><strong>Design</strong> – a description of the pattern&rsquo;s design and in particular, the user&rsquo;s behavior in interacting with it </li>
   <li><strong>Implementation </strong>– a guide to how the pattern would be implemented </li>
-  <li><strong>Illustrations</strong> – a visual representation of classes in the pattern (e.g. a diagram)) </li>
+  <li><strong>Illustrations</strong> – a visual representation of classes in the pattern (e.g. a diagram) </li>
   <li><strong>Examples</strong> – an implementation of the pattern in a minimal form </li>
   <li><strong>Co-requisites</strong> – what other patterns may be needed to support use of the pattern being described? </li>
   <li><strong>Relations</strong> – what patterns does this pattern resemble? does it closely mimic any others? </li>