Normalize line endings in already existing files

src/widgets/dialogs/WelcomeDialog.hpp

@@ -1,13 +1,13 @@
-#pragma once
-
-#include "widgets/BaseWindow.hpp"
-
-namespace chatterino {
-
-class WelcomeDialog : public BaseWindow
-{
-public:
-    WelcomeDialog();
-};
-
-}  // namespace chatterino
+#pragma once
+
+#include "widgets/BaseWindow.hpp"
+
+namespace chatterino {
+
+class WelcomeDialog : public BaseWindow
+{
+public:
+    WelcomeDialog();
+};
+
+}  // namespace chatterino