feat(REQ-4196) - 调整 wps 文档替换的变量前后缀标识

workflow-engine-server/src/main/java/cn/axzo/workflow/server/common/util/WpsUtil.java

@@ -83,6 +83,8 @@ public class WpsUtil {
                 t.setContent(Objects.nonNull(s.getValue()) ? s.getValue().toString() : "");
             }
             t.setType(s.getType().name());
+            t.setPrefix("[");
+            t.setSuffix("]");
         });
         if (StringUtils.hasText(fileCode)) {
             FileTemplateReplaceRequest request = new FileTemplateReplaceRequest();