correct link on index page to grid system

docs/index.html

@@ -133,7 +133,7 @@
       <div class="span4">
         <img class="marketing-img" src="assets/img/bs-docs-bootstrap-features.png">
         <h2>Packed with features.</h2>
-        <p>A 12-column responsive <a href="./scaffolding.html#grid">grid</a>, dozens of components, <a href="./javascript.html">JavaScript plugins</a>, typography, form controls, and even a <a href="./customize.html">web-based Customizer</a> to make Bootstrap your own.</p>
+        <p>A 12-column responsive <a href="./scaffolding.html#gridSystem">grid</a>, dozens of components, <a href="./javascript.html">JavaScript plugins</a>, typography, form controls, and even a <a href="./customize.html">web-based Customizer</a> to make Bootstrap your own.</p>
       </div>
     </div>
 

docs/templates/pages/index.mustache

@@ -62,7 +62,7 @@
       <div class="span4">
         <img class="marketing-img" src="assets/img/bs-docs-bootstrap-features.png">
         <h2>{{_i}}Packed with features.{{/i}}</h2>
-        <p>{{_i}}A 12-column responsive <a href="./scaffolding.html#grid">grid</a>, dozens of components, <a href="./javascript.html">JavaScript plugins</a>, typography, form controls, and even a <a href="./customize.html">web-based Customizer</a> to make Bootstrap your own.{{/i}}</p>
+        <p>{{_i}}A 12-column responsive <a href="./scaffolding.html#gridSystem">grid</a>, dozens of components, <a href="./javascript.html">JavaScript plugins</a>, typography, form controls, and even a <a href="./customize.html">web-based Customizer</a> to make Bootstrap your own.{{/i}}</p>
       </div>
     </div>