FIX: fix links in navbar

Author: jklymak

mpl_sphinx_theme/mpl_nav_bar.html

@@ -25,25 +25,25 @@
 {% else %}
 <ul id="navbar-main-elements" class="navbar-nav">
   <li class="nav-item">
-    <a class="reference internal nav-link" href="https://matplotlib.org/plot_types/index">Plot types</a>
+    <a class="reference internal nav-link" href="https://matplotlib.org/stable/plot_types/index">Plot types</a>
   </li>
   <li class="nav-item">
-    <a class="reference internal nav-link" href="https://matplotlib.org/gallery/index">Examples</a>
+    <a class="reference internal nav-link" href="https://matplotlib.org/stable/gallery/index">Examples</a>
   </li>
   <li class="nav-item">
-    <a class="reference internal nav-link" href="https://matplotlib.org/tutorials/index">Tutorials</a>
+    <a class="reference internal nav-link" href="https://matplotlib.org/stable/tutorials/index">Tutorials</a>
   </li>
   <li class="nav-item">
-    <a class="reference internal nav-link" href="https://matplotlib.org/api/index">Reference</a>
+    <a class="reference internal nav-link" href="https://matplotlib.org/stable/api/index">Reference</a>
   </li>
   <li class="nav-item">
-    <a class="reference internal nav-link" href="https://matplotlib.org/users/index">Usage guide</a>
+    <a class="reference internal nav-link" href="https://matplotlib.org/stable/users/index">Usage guide</a>
   </li>
   <li class="nav-item">
-    <a class="reference internal nav-link" href="https://matplotlib.org/devel/index">Develop</a>
+    <a class="reference internal nav-link" href="https://matplotlib.org/stable/devel/index">Develop</a>
   </li>
   <li class="nav-item">
-    <a class="reference internal nav-link" href="https://matplotlib.org/users/release_notes">Release notes</a>
+    <a class="reference internal nav-link" href="https://matplotlib.org/stable/users/release_notes">Release notes</a>
   </li>
 </ul>
 {% endif %}