fix unit test

Author: eumel8

main_test.go

@@ -24,16 +24,16 @@ func TestLintJSON_Valid(t *testing.T) {
 
 func TestLintJSON_Invalid(t *testing.T) {
 	input := `{
-		"name": "ChatGPT",
-		"skills": ["Go", "Python"
-	}` // Missing closing bracket
+"name": "ChatGPT",
+"skills": ["Go", "Python"
+}` // 4 real lines due to raw string literal
 
 	var output bytes.Buffer
 	err := LintJSON(strings.NewReader(input), &output)
 	if err == nil {
 		t.Error("Expected error for malformed JSON, got nil")
 	} else if !strings.Contains(err.Error(), "line 4") {
-		t.Errorf("Expected error to mention line number, got: %v", err)
+		t.Errorf("Expected error to mention line 4, got: %v", err)
 	}
 }