Update zh tw languages and fix some broken links (#455)

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Co-authored-by: silverwind <[email protected]>
Co-authored-by: silverwind <[email protected]>
Reviewed-on: https://gitea.com/gitea/docs/pulls/455
Reviewed-by: silverwind <[email protected]>

i18n/zh-tw/docusaurus-theme-classic/footer.json

@@ -1,10 +1,10 @@
 {
   "link.title.Docs": {
-    "message": "文档",
+    "message": "文件",
     "description": "The title of the footer links column with title=Docs in the footer"
   },
   "link.title.Community": {
-    "message": "社区",
+    "message": "社區",
     "description": "The title of the footer links column with title=Community in the footer"
   },
   "link.title.More": {
@@ -12,11 +12,11 @@
     "description": "The title of the footer links column with title=More in the footer"
   },
   "link.item.label.Tutorial": {
-    "message": "教程",
+    "message": "教學",
     "description": "The label of footer link with label=Tutorial linking to /"
   },
   "link.item.label.Code": {
-    "message": "开源代码",
+    "message": "開源程式碼",
     "description": "The label of footer link with label=Code linking to https://github.com/go-gitea/gitea"
   },
   "link.item.label.Stack Overflow": {