Fix a typo in javadoc
(cherry picked from commit b1460b73c2647115dcb574c5ecb4642f45e86d59)
diff --git a/wicket-core/src/main/java/org/apache/wicket/markup/html/form/FormComponent.java b/wicket-core/src/main/java/org/apache/wicket/markup/html/form/FormComponent.java
index 28d3cd4..64d5ae6 100644
--- a/wicket-core/src/main/java/org/apache/wicket/markup/html/form/FormComponent.java
+++ b/wicket-core/src/main/java/org/apache/wicket/markup/html/form/FormComponent.java
@@ -946,7 +946,7 @@
* Gets whether this component's input can be null. By default, components that do not get input
* will have null values passed in for input. However, component TextField is an example
* (possibly the only one) that never gets a null passed in, even if the field is left empty
- * UNLESS it had attribute <code>disabled="disabled"</code> set.
+ * UNLESS it has attribute <code>disabled="disabled"</code> set.
*
* @return True if this component's input can be null. Returns true by default.
*/
