Updated List component doc

Author: UnderlineWords

docs/components/list.html

@@ -232,6 +232,10 @@
                                                 <td>List Item Title</td>
                                                 <td><code>.title</code></td>
                                             </tr>
+                                            <tr>
+                                                <td>List Item Subtitle</td>
+                                                <td><code>.subtitle</code></td>
+                                            </tr>
                                             <tr>
                                                 <td>List Item Actions</td>
                                                 <td><code>.actions</code></td>
@@ -541,20 +545,23 @@
                                                     <img src="https://source.unsplash.com/user/josilito/200x200" class="rounded" width="80">
                                                     <div class="body">
                                                         <span class="title">Title</span>
+                                                        <span class="subtitle">Subtitle</span>
                                                         Lorem ipsum dolor sit amet, consectetur adipiscing elit.
                                                     </div>
                                                 </div>
                                                 <div class="item">
                                                     <img src="https://source.unsplash.com/user/cosmictimetraveler/200x200" class="rounded" width="80">
                                                     <div class="body">
                                                         <span class="title">Title</span>
+                                                        <span class="subtitle">Subtitle</span>
                                                         Lorem ipsum dolor sit amet, consectetur adipiscing elit.
                                                     </div>
                                                 </div>
                                                 <div class="item">
                                                     <img src="https://source.unsplash.com/user/aahubs/200x200" class="rounded" width="80">
                                                     <div class="body">
                                                         <span class="title">Title</span>
+                                                        <span class="subtitle">Subtitle</span>
                                                         Lorem ipsum dolor sit amet, consectetur adipiscing elit.
                                                     </div>
                                                 </div>
@@ -566,7 +573,8 @@
                                                     <img src="https://source.unsplash.com/user/josilito/200x200" class="avatar" width="80">
                                                     <div class="body">
                                                         <a href="javascript:" class="title">Title</a>
-                                                        Lorem ipsum dolor sit amet, consectetur adipiscing elit.
+                                                        <span class="subtitle">Subtitle</span>
+                                                        Lorem ipsum dolor sit amet consectetur.
                                                     </div>
                                                     <div class="actions">
                                                         <div class="buttons mini">
@@ -587,7 +595,8 @@
                                                     <img src="https://source.unsplash.com/user/cosmictimetraveler/200x200" class="avatar" width="80">
                                                     <div class="body">
                                                         <a href="javascript:" class="title">Title</a>
-                                                        Lorem ipsum dolor sit amet, consectetur adipiscing elit.
+                                                        <span class="subtitle">Subtitle</span>
+                                                        Lorem ipsum dolor sit amet consectetur.
                                                     </div>
                                                     <div class="actions">
                                                         <div class="buttons mini">
@@ -608,7 +617,8 @@
                                                     <img src="https://source.unsplash.com/user/aahubs/200x200" class="avatar" width="80">
                                                     <div class="body">
                                                         <a href="javascript:" class="title">Title</a>
-                                                        Lorem ipsum dolor sit amet, consectetur adipiscing elit.
+                                                        <span class="subtitle">Subtitle</span>
+                                                        Lorem ipsum dolor sit amet consectetur.
                                                     </div>
                                                     <div class="actions">
                                                         <div class="buttons mini">