fix Tooltip style bug

src/styles/components/tooltip.less

@@ -76,6 +76,9 @@
         &-with-width{
             white-space: pre-wrap;
             text-align: justify;
+            // 解决纯字母或数字不换行的问题
+            word-wrap: break-word;
+            word-break: break-all;
         }
     }
 
@@ -107,4 +110,4 @@
             border-width: @tooltip-arrow-outer-width-light;
         }
     }
-}
+}