adding links to using kableExtra in bookdown & radix
diff --git a/docs/index.html b/docs/index.html
index 11132c5..55c6e8f 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -100,7 +100,13 @@
             <a href="kableExtra_in_other_HTML_themes.html" class="normal-link">kableExtra in other HTML themes</a>
           </li>
           <li>
-            <a href="best_practice_for_newline_in_latex_table.pdf" class="normal-link">Best Practice for newline in LaTeX table <sup><span style="border-radius: 2px; padding: 1px; background-color: #d14; font-size: 8px; color: #fff">New~</span></sup></a>
+            <a href="best_practice_for_newline_in_latex_table.pdf" class="normal-link">Best Practice for newline in LaTeX table</a>
+          </li>
+          <li>
+            <a href="using_kableExtra_in_radix.html" class="normal-link">Using kableExtra in Bookdown<sup><span style="border-radius: 2px; padding: 1px; background-color: #d14; font-size: 8px; color: #fff">New~</span></sup></a>
+          </li>
+          <li>
+            <a href="https://haozhu233.github.io/kableExtra/bookdown/index.html" class="normal-link">Using kableExtra in Bookdown<sup><span style="border-radius: 2px; padding: 1px; background-color: #d14; font-size: 8px; color: #fff">New~</span></sup></a>
           </li>
         </ul>
       </div>