Fixed typo error in toc.html in documentation.
diff --git a/user_guide/toc.html b/user_guide/toc.html
index 90442cb..4b4ab10 100644
--- a/user_guide/toc.html
+++ b/user_guide/toc.html
@@ -113,7 +113,7 @@
<li><a href="./general/profiling.html">Profiling Your Application</a></li>
<li><a href="./general/cli.html">Running via the CLI</a></li>
<li><a href="./general/managing_apps.html">Managing Applications</a></li>
- <li><a href="'./general/environments.html">Handling Multiple Environments</a></li>
+ <li><a href="./general/environments.html">Handling Multiple Environments</a></li>
<li><a href="./general/alternative_php.html">Alternative PHP Syntax</a></li>
<li><a href="./general/security.html">Security</a></li>
<li><a href="./general/styleguide.html">PHP Style Guide</a></li>