Fix link to compiling info. Fixes #13938.

[skip sauce]

docs/_includes/css/less.html

@@ -7,7 +7,7 @@
 
 
   <h2 id="less-bootstrap">Compiling Bootstrap</h2>
-  <p>Bootstrap can be used in at least two ways: with the compiled CSS or with the source Less files. To compile the Less files, <a href="https://github.com/twbs/bootstrap#compiling-css-and-javascript">visit the README</a> for how to setup your development environment to run the necessary commands.</p>
+  <p>Bootstrap can be used in at least two ways: with the compiled CSS or with the source Less files. To compile the Less files, <a href="../getting-started/#grunt">consult the Getting Started section</a> for how to setup your development environment to run the necessary commands.</p>
   <p>Third party compilation tools may work with Bootstrap, but they are not supported by our core team.</p>
 
   <h2 id="less-variables">Variables</h2>