change everything to markdown

data/resources/vocab/2019/12/2019-12-08-动物.md

@@ -1,3 +1,4 @@
+```yaml
 vocab:
   - chinese: 青蛙
     alt: 🐸
@@ -114,4 +115,5 @@ vocab:
   - chinese: 海鳗鱼
   - chinese: 马鲛鱼
   - chinese: 池沼公鱼
-  - chinese: 鲱鱼
+  - chinese: 鲱鱼
+```

data/resources/vocab/2019/12/2019-12-13-动物.md

@@ -50,4 +50,4 @@ vocab:
   - chinese: 科莫多巨蜥
   - chinese: 蜗牛
     alt: 🐌
-```
+```