fix(category-search): modify the customTemplate field to be optional. (#102)

Author: yangtuantuan

devui/category-search/category-search.type.ts

@@ -36,7 +36,7 @@ export interface ICategorySearchTagItem {
   /**
   * 自定义下拉模板的展示内容
   */
-  customTemplate: TemplateRef<any>;
+  customTemplate?: TemplateRef<any>;
   /**
    * 已选中值
    */

devui/category-search/doc/api-cn.md

@@ -80,7 +80,7 @@ export interface ICategorySearchTagItem {
   /**
    * 自定义下拉模板的展示内容
    */
-  customTemplate: TemplateRef<any>;
+  customTemplate?: TemplateRef<any>;
   /**
    * 已选中值
    */

devui/category-search/doc/api-en.md

@@ -80,7 +80,7 @@ export interface ICategorySearchTagItem {
   /**
    * Customize the content to be displayed in the drop-down list box.
    */
-  customTemplate: TemplateRef<any>;
+  customTemplate?: TemplateRef<any>;
   /**
    * Selected Value
    */