docs: [Table] update stickHeader story

packages/semi-ui/table/_story/v2/stickyHeader/index.tsx

@@ -118,7 +118,7 @@ function App() {
                 name: isSemiDesign ? `Semi Design 设计稿${i}.fig` : `Semi Pro 设计稿${i}.fig`,
                 owner: isSemiDesign ? '姜鹏志' : '郝宣',
                 size: randomNumber,
-                updateTime: new Date().valueOf() + randomNumber * DAY,
+                updateTime: new Date('2023-01-31').valueOf() + randomNumber * DAY,
                 avatarBg: isSemiDesign ? 'grey' : 'red',
             });
         }