Everywhere: Fix spelling mistakes

Author: https://github.com/mjz19910
Commit: 10ec98dd38
Pull-request: https://github.com/SerenityOS/serenity/pull/11694
Reviewed-by: https://github.com/Dexesttp
Reviewed-by: https://github.com/creator1creeper1 ✅
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibWeb/DOM/Document.h

@@ -177,7 +177,7 @@ public:
     JS::Value run_javascript(StringView source, StringView filename = "(unknown)");
 
     NonnullRefPtr<Element> create_element(const String& tag_name);
-    NonnullRefPtr<Element> create_element_ns(const String& namespace_, const String& qualifed_name);
+    NonnullRefPtr<Element> create_element_ns(const String& namespace_, const String& qualified_name);
     NonnullRefPtr<DocumentFragment> create_document_fragment();
     NonnullRefPtr<Text> create_text_node(const String& data);
     NonnullRefPtr<Comment> create_comment(const String& data);