Improve config readability by removing unnecessary fields and adding omitempty

main.go

@@ -427,11 +427,7 @@ func CreateExampleConfig() {
 		// Multiline regex example (DOTALL is auto-enabled). Captures numeric in nested XML.
 		{
 			Name: "XMLNestedValueMultiply",
-			Regex: `
-<item>\s*
-\s*<name>!any</name>\s*
-\s*<value>(!num)</value>\s*
-</item>`,
+			Regex: `<item>\s*\s*<name>!any<\/name>\s*\s*<value>(!num)<\/value>\s*\s*<\/item>`,
 			Lua:   `* $multiply`,
 			Files: []string{"data/**/*.xml"},
 			// Demonstrates multiline regex in YAML