feat: update unicode character

Author: kienmatu

src/main/java/com/ly/doc/function/WordXmlEscape.java

@@ -42,7 +42,7 @@ public class WordXmlEscape implements Function {
 	 * Represents a non-breaking space character (U+00A0) commonly used in Word documents.
 	 * In HTML, this character is typically represented as " ".
 	 */
-	private static final String UNICODE_NON_BREAK_SPACE = " ";//""\u00A0";
+	private static final String UNICODE_NON_BREAK_SPACE = "\u00A0";
 	private static final Map<String, String> XML_ESCAPE_MAP;
 
 	static {