fix: resolve tooltip text-color abnormal (#64)

apps/docs/global.less

@@ -79,12 +79,12 @@
   color: var(--text-color) !important;
 }
 
-.semi-tooltip-content {
-  color: black;
-}
+// .semi-tooltip-content {
+//   color: black;
+// }
 
 .dark {
   .invert-img {
     filter: invert(0.9);
   }
-}
+}