Correct Grammar in Form Component's Documentation (#20381)

In a demo corresponding to the form component, a comment contains a grammatical mistake: an infinitive in this context requires the present instead of past tense.

AUTHORS.txt

@@ -190,6 +190,7 @@ Gray Choi <gray.choi.1988@gmail.com>
 Guan Hao <raptium@gmail.com>
 Guan Yu Pan (Jacky) <jackypan1989@gmail.com>
 Guichi Zhao <zgc910619@gmail.com>
+Hami Abdi <abdih@users.noreply.github.com>
 HJin.me <hjin.me@gmail.com>
 Hai Phan Nguyen <pnghai@gmail.com>
 Haibin Yu <haibin.yu@oceanwing.com>

components/form/demo/inline-login.md

@@ -22,7 +22,7 @@ function hasErrors(fieldsError) {
 
 class HorizontalLoginForm extends React.Component {
   componentDidMount() {
-    // To disabled submit button at the beginning.
+    // To disable submit button at the beginning.
     this.props.form.validateFields();
   }