Issue #3395900 by quietone, smustgrave: Correct spelling of words in module core/tests

core/misc/cspell/dictionary.txt

...les/block/tests/src/Functional/Views/DisplayBlockTest.php

...odules/contextual/tests/src/Kernel/ContextualUnitTest.php

...em/tests/src/Functional/UpdateSystem/UpdateScriptTest.php

core/modules/system/tests/src/Kernel/Theme/ThemeTest.php

...dTests/Composer/Template/ComposerProjectTemplatesTest.php

...sts/Installer/DistributionProfileExistingSettingsTest.php

...pal/FunctionalTests/Installer/DistributionProfileTest.php

...sts/Installer/DistributionProfileTranslationQueryTest.php

...nalTests/Installer/DistributionProfileTranslationTest.php

...sts/Drupal/KernelTests/Core/Database/DatabaseTestBase.php

core/tests/Drupal/KernelTests/Core/Database/LoggingTest.php

core/tests/Drupal/KernelTests/Core/Database/SelectTest.php

...ts/Drupal/KernelTests/Core/Entity/FieldSqlStorageTest.php

...sts/Drupal/KernelTests/Core/Routing/RouteProviderTest.php

core/tests/Drupal/Nightwatch/nightwatch.conf.js

.../Drupal/Tests/Component/Annotation/MockFileFinderTest.php

.../Tests/Component/Diff/Engine/HWLDFWordAccumulatorTest.php

core/tests/Drupal/Tests/Component/Utility/HtmlTest.php

...pal/Tests/Core/Cache/Context/CacheContextsManagerTest.php