Fix spell check issues

.github/actions/spelling/expect/expect.txt

@@ -557,6 +557,7 @@ DECSTR
 DECSWL
 DECTCEM
 Dedupe
+deduplicate
 deduplicated
 DEFAPP
 DEFAULTBACKGROUND

src/cascadia/TerminalSettingsModel/CascadiaSettingsSerialization.cpp

@@ -143,7 +143,7 @@ void SettingsLoader::GenerateProfiles()
         CATCH_LOG_MSG("Dynamic Profile Namespace: \"%.*s\"", gsl::narrow<int>(generatorNamespace.size()), generatorNamespace.data())
 
         // If the generator produced some profiles we're going to give them default attributes.
-        // By settings the Origin/Source/... here, we deduplicate some code and ensure they aren't accidentally missing.
+        // By settings the Origin/Source/etc. here, we deduplicate some code and ensure they aren't missing accidentally.
         if (inboxSettings.profiles.size() > previousSize)
         {
             const winrt::hstring source{ generatorNamespace };