correct 0135 question to correct difficulty

Tetsuya3850 · web-flow · commit 8c8bee032e7c · 2024-05-15T09:23:05.000+09:00
diff --git a/.problemSiteData.json b/.problemSiteData.json
@@ -5855,7 +5855,7 @@
      "pattern":"Greedy",
      "link":"candy/",
      "video":"1IzCRCcK17A",
-     "difficulty":"Medium",
+     "difficulty":"Hard",
      "code":"135-candy"
   },
   {
