update cs.json for github pages domain verification

domains/cs.json

@@ -6,6 +6,7 @@
         "email": "c.shore.cn@gmail.com"
     },
     "record": {
-        "CNAME": "shorecn.github.io"
+        "CNAME": "shorecn.github.io",
+        "TXT": "d4e6cbb56d440ddedd7bf5079b0d81"
     }
 }