Issue #2565671 by joyceg, Aki Tendo: Misspelling in...

Issue #2565671 by joyceg, Aki Tendo: Misspelling in core/modules/simpletest/src/Tests/SimpleTestTest.php

core/modules/simpletest/src/Tests/SimpleTestTest.php

@@ -174,7 +174,7 @@ function stubTest() {
     }
     catch (\AssertionError $e) {
       try {
-        // Now test with an error message to insure it is correctly passed
+        // Now test with an error message to ensure it is correctly passed
         // along by the rethrow.
         assert(FALSE, 'Lorem Ipsum');
       }