Add marksman LSP for markdown (#304)

Author: goyalyashpal

index.html

@@ -2049,6 +2049,40 @@ <h4>Language servers</h4>
           </td>
           <td></td>
         </tr>
+        <tr>
+          <th>Markdown</th>
+          <td>
+            <a href="https://github.com/artempyanykh">Artem Pianykh</a>
+          </td>
+          <td class="repo">
+            <a href="https://github.com/artempyanykh/marksman">github.com/artempyanykh/marksman</a>
+          </td>
+          <td class="success">
+            <span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
+          </td>
+          <td class="success">
+            <span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
+          </td>
+          <td class="success">
+            <span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
+          </td>
+          <td class="success">
+            <span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
+          </td>
+          <td class="success">
+            <span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
+          </td>
+          <td class="success">
+            <span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
+          </td>
+          <td>
+            <ul>
+              <li>Support for wiki-links</li>
+              <li>Table of Contents generation</li>
+              <li>Single-file mode</li>
+            </ul>
+          </td>
+        </tr>
         <tr>
           <th>MOCA</th>
           <td>