Try prevent relative links if URL isn't fully typed out (#5917)

* Try to prevent relative links if URL isn't fully typed out

* Refactoring: move correctLink function to utils folder

* Update to use prependHTTP function by @wordpres/url package

* Remove correctLink function

* Framework: Update package-lock.json for url@1.1.0

blocks/rich-text/format-toolbar/index.js

@@ -11,6 +11,7 @@ import {
 	withSpokenMessages,
 } from '@wordpress/components';
 import { keycodes } from '@wordpress/utils';
+import { prependHTTP } from '@wordpress/url';
 
 /**
  * Internal dependencies
@@ -138,7 +139,7 @@ class FormatToolbar extends Component {
 		event.preventDefault();
 		this.setState( { isEditingLink: false, isAddingLink: false, newLinkValue: '' } );
 		this.props.onChange( { link: {
-			value: this.state.newLinkValue,
+			value: prependHTTP( this.state.newLinkValue ),
 			target: this.state.opensInNewWindow ? '_blank' : null,
 			rel: this.state.opensInNewWindow ? 'noreferrer noopener' : null,
 		} } );

package.json

@@ -20,7 +20,7 @@
 		"@wordpress/dom-ready": "1.0.4",
 		"@wordpress/hooks": "1.1.6",
 		"@wordpress/i18n": "1.1.0",
-		"@wordpress/url": "1.0.3",
+		"@wordpress/url": "1.1.0",
 		"@wordpress/wordcount": "1.0.0",
 		"classnames": "2.2.5",
 		"clipboard": "1.7.1",