fix(*): update lint-md-cli

lint-md -> lint-md-cli

Author: hustcc

.travis.yml

@@ -2,5 +2,5 @@ language: node_js
 node_js:
   - "10"
 before_install:
-  - npm i -g lint-md
+  - npm i -g lint-md-cli
 script: lint-md ./