fixed typo in sample code for protecting identifiers
diff --git a/user_guide/database/queries.html b/user_guide/database/queries.html
index ba69fed..59f7e23 100644
--- a/user_guide/database/queries.html
+++ b/user_guide/database/queries.html
@@ -86,7 +86,7 @@
// outputs prefix_tablename</code></p>
<h1>Protecting identifiers</h1>
<p>In many databases it is advisable to protect table and field names - for example with backticks in MySQL. Active Record queries are automatically protected, however if you need to manually protect an identifier you can use:</p>
-<p><code>$this->db->protect_identifier('table_name');</code></p>
+<p><code>$this->db->protect_identifiers('table_name');</code></p>
<h1>Escaping Queries</h1>
<p>It's a very good security practice to escape your data before submitting it into your database.
CodeIgniter has two functions that help you do this:</p>