rephrase error text

src/redesign/login/LoginPage.jsx

@@ -112,7 +112,7 @@ class LoginPage extends React.Component {
     if (email === '') {
       errors.emailOrUsername = this.props.intl.formatMessage(messages['email.validation.message']);
     } else if (email.length < 3) {
-      errors.emailOrUsername = this.props.intl.formatMessage(messages['email.format.validation.less.chars.message']);
+      errors.emailOrUsername = this.props.intl.formatMessage(messages['username.or.email.format.validation.less.chars.message']);
     } else {
       errors.emailOrUsername = '';
     }

src/redesign/login/messages.jsx

@@ -119,10 +119,10 @@ const messages = defineMessages({
     defaultMessage: 'The email address you\'ve provided isn\'t formatted correctly.',
     description: 'Validation message that appears when email address format is incorrect',
   },
-  'email.format.validation.less.chars.message': {
-    id: 'email.format.validation.less.chars.message',
-    defaultMessage: 'Email must have at least 3 characters.',
-    description: 'Validation message that appears when email address is less than 3 characters',
+  'username.or.email.format.validation.less.chars.message': {
+    id: 'username.or.email.format.validation.less.chars.message',
+    defaultMessage: 'Username or email must have at least 3 characters.',
+    description: 'Validation message that appears when username or email address is less than 3 characters',
   },
   'email.validation.message': {
     id: 'email.validation.message',

src/redesign/login/tests/LoginPage.test.jsx

@@ -117,7 +117,7 @@ describe('LoginPage', () => {
   });
 
   it('should match state for invalid email (less than 3 characters), on form submission', () => {
-    const errorState = { emailOrUsername: 'Email must have at least 3 characters.', password: '' };
+    const errorState = { emailOrUsername: 'Username or email must have at least 3 characters.', password: '' };
     store.dispatch = jest.fn(store.dispatch);
 
     const loginPage = (mount(reduxWrapper(<IntlLoginPage {...props} />))).find('LoginPage');