fixed documentation to reference set_rules() vs set_rule()
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 00deea2..d3bc7e2 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -95,7 +95,7 @@
<h3>Bug fixes for 1.7.1</h3>
<ul>
- <li>Fixed assorted user guide typos or examples.</li>
+ <li>Fixed assorted user guide typos or examples (#6521).</li>
<li>Fixed a bug in the MySQLi driver when no port is specified</li>
<li>Fixed a bug (#5702), in which the field label was not being fetched properly, when "matching" one field to another.</li>
<li>Fixed a bug in which identifers were not being escaped properly when reserved characters were used.</li>
diff --git a/user_guide/libraries/form_validation.html b/user_guide/libraries/form_validation.html
index b49117e..31fd6e9 100644
--- a/user_guide/libraries/form_validation.html
+++ b/user_guide/libraries/form_validation.html
@@ -1110,7 +1110,7 @@
<p>The following functions are intended for use in your controller functions.</p>
-<h2>$this->form_validation->set_rule();</h2>
+<h2>$this->form_validation->set_rules();</h2>
<p>Permits you to set validation rules, as described in the tutorial sections above:</p>