Issue #3391788 by quietone, xjm: Fix spelling of function names in tests

core/misc/cspell/dictionary.txt

...ules/datetime/tests/src/Functional/DateTimeWidgetTest.php

...onal/EntityResource/EntityTest/EntityTestDateOnlyTest.php

core/modules/datetime/tests/src/Kernel/DateTimeItemTest.php

core/modules/field/tests/src/Kernel/FieldDataCountTest.php

...ld_ui/tests/src/FunctionalJavascript/ManageFieldsTest.php

core/modules/menu_ui/tests/src/Functional/MenuUiTest.php

.../modules/path/tests/src/Functional/PathLanguageUiTest.php

...rest/tests/src/Kernel/Views/StyleSerializerKernelTest.php

...tem/tests/src/Functional/Form/ElementsTableSelectTest.php

...les/taxonomy/tests/src/Functional/TermTranslationTest.php

...les/views/tests/src/Kernel/RenderCacheIntegrationTest.php

core/modules/views/tests/src/Kernel/ViewsPreprocessTest.php

...al/KernelTests/Core/Extension/ModuleExtensionListTest.php

...rnelTests/Core/Extension/ThemeEngineExtensionListTest.php

...pal/KernelTests/Core/Extension/ThemeExtensionListTest.php

core/tests/Drupal/Tests/Core/Access/AccessResultTest.php

...e/DependencyInjection/Compiler/TaggedHandlersPassTest.php

core/tests/Drupal/Tests/Core/Entity/EntityTypeTest.php

core/tests/Drupal/Tests/Core/Menu/MenuActiveTrailTest.php