fix 地震速报 (#1681)

close #1677

lib/router.js

@@ -535,7 +535,7 @@ router.get('/hopper/:lowestOnly/:from/:to?', require('./routes/hopper/index'));
 router.get('/mafengwo/note/:type', require('./routes/mafengwo/note'));
 
 // 中国地震局震情速递（与地震台网同步更新）
-router.get('/earthquake', require('./routes/earthquake'));
+router.get('/earthquake/:region?', require('./routes/earthquake'));
 
 // 笔趣阁
 router.get('/biquge/novel/latestchapter/:id', require('./routes/novel/biquge'));