[ci skip] Merge pull request #5143 from TysonAndre/misc-phpdoc-nits

Fix misc inconsistencies between code and doc comments
diff --git a/system/database/drivers/ibase/ibase_forge.php b/system/database/drivers/ibase/ibase_forge.php
index 44bb24e..31352f1 100644
--- a/system/database/drivers/ibase/ibase_forge.php
+++ b/system/database/drivers/ibase/ibase_forge.php
@@ -91,7 +91,7 @@
 	 * Create database
 	 *
 	 * @param	string	$db_name
-	 * @return	string
+	 * @return	bool
 	 */
 	public function create_database($db_name)
 	{