fix macro bugs (the bug about the string may be replaced)

src/main/java/cn/wenyan/compiler/PrepareCompiler.java

@@ -91,7 +91,7 @@ private String getString(List<String> strs){
         return builder.toString();
     }
 
-    //TODO 替换字符串的问题
+
     private void expansion(List<String> strs){
         for(int i = 0;i<strs.size();i++){
             int index = i;