Fixed spelling mistake.
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index d7a6c7e..865bdd8 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -67,7 +67,7 @@
<ul>
<li class="reactor">Callback validation rules can now accept parameters like any other validation rule.</li>
<li class="reactor">Ability to log certain error types, not all under a threshold.</li>
- <li class="reactor">Added html_escape() to the <a href="general/common_functions.html">Common functions</a> to escape HTML output for preventing XSS easliy.</li>
+ <li class="reactor">Added html_escape() to <a href="general/common_functions.html">Common functions</a> to escape HTML output for preventing XSS.</li>
</ul>
</li>
<li>Helpers