github login: fix env name

Signed-off-by: kamijin_fanta <kamijin@live.jp>

Author: kamijin-fanta

lib/config/environment.js

@@ -66,7 +66,7 @@ module.exports = {
     consumerSecret: process.env.CMD_TWITTER_CONSUMERSECRET
   },
   github: {
-    enterpriseURL: process.env.ENTERPRISE_URL,
+    enterpriseURL: process.env.CMD_GITHUB_ENTERPRISE_URL,
     clientID: process.env.CMD_GITHUB_CLIENTID,
     clientSecret: process.env.CMD_GITHUB_CLIENTSECRET
   },