Issue #3502487 by lauriii, oily, ckrina: Make the menu link form less verbose

(cherry picked from commit 8357990c)

core/modules/menu_link_content/src/Entity/MenuLinkContent.php

@@ -293,7 +293,6 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
 
     $fields['title'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Menu link title'))
-      ->setDescription(t('The text to be used for this link in the menu.'))
       ->setRequired(TRUE)
       ->setTranslatable(TRUE)
       ->setRevisionable(TRUE)
@@ -333,7 +332,6 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
 
     $fields['link'] = BaseFieldDefinition::create('link')
       ->setLabel(t('Link'))
-      ->setDescription(t('The location this menu link points to.'))
       ->setRevisionable(TRUE)
       ->setRequired(TRUE)
       ->setSettings([

core/modules/menu_link_content/tests/src/Functional/MenuLinkContentFormTest.php

@@ -91,7 +91,7 @@ public function testMenuLinkContentForm(): void {
     $option = $this->assertSession()->optionExists('edit-menu-parent', 'admin:');
     $this->assertTrue($option->isSelected());
     // Test that the field description is present.
-    $this->assertSession()->pageTextContains('The location this menu link points to.');
+    $this->assertSession()->pageTextContains('Start typing the title of a piece of content to select it. ');
 
     $this->submitForm([
       'title[0][value]' => 'Front page',