docs(domains): 更新fshrimp.json中的所有者信息

添加所有者的邮箱和X平台链接，完善联系信息

domains/fshrimp.json

@@ -1,6 +1,8 @@
 {
     "owner": {
-        "username": "Rundll86"
+        "username": "Rundll86",
+        "email": "3161880837@qq.com",
+        "x": "https://x.com/fallingshrimp"
     },
     "records": {
         "CNAME": "fshrimp.top"