Add v1.26 documentation (#376)

Co-authored-by: silverwind <[email protected]>
Reviewed-on: https://gitea.com/gitea/docs/pulls/376
Reviewed-by: silverwind <[email protected]>

i18n/zh-tw/docusaurus-plugin-content-docs/version-1.26/usage/user-setting/_category_.json

@@ -0,0 +1,9 @@
+{
+  "label": "User Setting",
+  "position": 200,
+  "link": {
+    "type": "generated-index",
+    "slug": "/usage/user-setting",
+    "description": "Configuring user preferences and settings"
+  }
+}