修正拼写：Javascript->JavaScript&Typescript->TypeScript

problems/0474.一和零.md

@@ -362,7 +362,7 @@ func max(a,b int) int {
 }
 ```
 
-### Javascript
+### JavaScript
 ```javascript
 const findMaxForm = (strs, m, n) => {
     const dp = Array.from(Array(m+1), () => Array(n+1).fill(0));