Update catalog_main.htm

src/admin/templets/catalog_main.htm

@@ -95,7 +95,7 @@
 					</div>
 					<div class="modal-footer">
 						<div class="btnStep">
-							<button id="btnGoStep4" type="button" class="btn btn-success">我知道了</button>
+							<button id="btnGoStep4" type="button" class="btn btn-success" data-dismiss="modal">我知道了</button>
 						</div>
 					</div>
 				</div>