Fix broken links to Less and Sass (#24933)

diff --git a/docs/index.html b/docs/index.html
index 986766b210de958a080935d3f25826092a6a6d46..20c31ac2d6ca43bf149ee9c57a09bd8a18b20075 100644 (file)
--- a/docs/index.html
+++ b/docs/index.html
@@ -27,7 +27,7 @@ title: Bootstrap · The world's most popular mobile-first and responsive f
       <div class="col-sm-4">
         <img src="assets/img/sass-less.png" alt="Sass and Less support" class="img-responsive">
         <h3>Preprocessors</h3>
-        <p>Bootstrap ships with vanilla CSS, but its source code utilizes the two most popular CSS preprocessors, <a href="../css/#less">Less</a> and <a href="../css/#sass">Sass</a>. Quickly get started with precompiled CSS or build on the source.</p>
+        <p>Bootstrap ships with vanilla CSS, but its source code utilizes the two most popular CSS preprocessors, <a href="../{{ site.docs_version }}/css/#less">Less</a> and <a href="../{{ site.docs_version }}/css/#sass">Sass</a>. Quickly get started with precompiled CSS or build on the source.</p>
       </div>
       <div class="col-sm-4">
         <img src="assets/img/devices.png" alt="Responsive across devices" class="img-responsive">