Fix links that currently cause a 404.

Author: jl2

quicklinks.html

@@ -7,13 +7,13 @@ <h1 class="title">Quick Links</h1>
 </header>
 <h3 id="initial-environment-setup">Initial environment setup</h3>
 <ul>
-  <li><a href="./env:lisp-system.html">getting a Common Lisp implementation</a></li>
-  <li><a href="./initial:new-project.html">creating and building a new project</a></li>
-  <li><a href="./env:quicklisp.html">dependency management with quicklisp</a></li>
+  <li><a href="./env/lisp-system.html">getting a Common Lisp implementation</a></li>
+  <li><a href="./initial/new-project.html">creating and building a new project</a></li>
+  <li><a href="./env/quicklisp.html">dependency management with quicklisp</a></li>
 </ul>
 <h3 id="example-code">Example code</h3>
 <ul>
-  <li><a href="./examples:trotter-walkthrough.html">Trotter - web crawler</a></li>
+  <li><a href="./examples/trotter-walkthrough.html">Trotter - web crawler</a></li>
 </ul>
 <h3 id="language-resource-recommendations">Language Resource Recommendations</h3>
 <p><em>in no particular order</em></p>