1.0.4 修改替换null为none的匹配为正则，修复了只替换了第一个匹配的错误。

Author: KuiyuanFu

package.json

@@ -2,7 +2,7 @@
     "name": "python-leetcode",
     "displayName": "PythonLeetcode",
     "description": "Solve LeetCode problems in VS Code",
-    "version": "1.0.3",
+    "version": "1.0.4",
     "author": "KuiyuanFu",
     "publisher": "KuiyuanFu",
     "license": "MIT",

src/leetCodeExecutor.ts

@@ -342,7 +342,7 @@ class LeetCodeExecutor implements Disposable {
                     return "listToListNode(" + p + ")"
                 }
                 else if (paraItemPair[1] == 'TreeNode') {
-                    p = p.replace('null', 'None')
+                    p = p.replace(/null/g, 'None')
                     return "listToTreeNode(" + p + ")"
                 }
                 else {