Fix holder.js links in examples

Replaces links to holder.js with links to the new docs.min.js.
The uncompressed holder.js file is now in docs/assets/js/vendor,
which is excluded from Jekyll builds. In turn, Holder is now
included in docs.min.js, which is smaller than holder.js,
so this should make everybody happy. :)

docs/examples/blog/index.html

@@ -166,6 +166,6 @@ <h4>Elsewhere</h4>
     <!-- Placed at the end of the document so the pages load faster -->
     <script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
     <script src="../../dist/js/bootstrap.min.js"></script>
-    <script src="../../assets/js/holder.js"></script>
+    <script src="../../assets/js/docs.min.js"></script>
   </body>
 </html>

docs/examples/carousel/index.html

@@ -201,6 +201,6 @@ <h2 class="featurette-heading">And lastly, this one. <span class="text-muted">Ch
     <!-- Placed at the end of the document so the pages load faster -->
     <script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
     <script src="../../dist/js/bootstrap.min.js"></script>
-    <script src="../../assets/js/holder.js"></script>
+    <script src="../../assets/js/docs.min.js"></script>
   </body>
 </html>

docs/examples/cover/index.html

@@ -70,6 +70,6 @@ <h1 class="cover-heading">Cover your page.</h1>
     <!-- Placed at the end of the document so the pages load faster -->
     <script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
     <script src="../../dist/js/bootstrap.min.js"></script>
-    <script src="../../assets/js/holder.js"></script>
+    <script src="../../assets/js/docs.min.js"></script>
   </body>
 </html>

docs/examples/dashboard/index.html

@@ -238,6 +238,6 @@ <h2 class="sub-header">Section title</h2>
     <!-- Placed at the end of the document so the pages load faster -->
     <script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
     <script src="../../dist/js/bootstrap.min.js"></script>
-    <script src="../../assets/js/holder.js"></script>
+    <script src="../../assets/js/docs.min.js"></script>
   </body>
 </html>

docs/examples/theme/index.html

@@ -379,6 +379,6 @@ <h1>Wells</h1>
     <!-- Placed at the end of the document so the pages load faster -->
     <script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
     <script src="../../dist/js/bootstrap.min.js"></script>
-    <script src="../../assets/js/holder.js"></script>
+    <script src="../../assets/js/docs.min.js"></script>
   </body>
 </html>