style: fix description item long text (#26820)

* style: fix description item long text

* Update index.less

components/descriptions/style/index.less

@@ -86,6 +86,7 @@
     color: @text-color;
     font-size: @font-size-base;
     line-height: @line-height-base;
+    overflow-wrap: break-word;
   }
 
   &-item {