Issue #3138783 by mohrerao, jungle, DevJoJodae: Fix "Partially" relev…

…ant typos in core

(cherry picked from commit 8b43890b4ee3bec9bdde9e6d4898908a6ed5f1c9)

tests/Drupal/FunctionalJavascriptTests/Ajax/ElementValidationTest.php

@@ -44,7 +44,7 @@ public function testAjaxElementValidation() {
     $this->assertNotNull($placeholder_text, 'A callback successfully echoed back a string.');
 
     $this->drupalGet('ajax_validation_test');
-    // Partialy complete the form with a number.
+    // Partially complete the form with a number.
     $page->fillField('drivernumber', '12345');
     $page->findField('spare_required_field')->focus();