Update _config.yml (#243)

_config.yml

@@ -154,13 +154,13 @@ comments:
       # 以兰空图床V1为例，下列填写内容为：
       # fileName: file
       # tokenName: Authorization
-      # url: https://xxxxxx/api/v1/upload
+      # api: https://xxxxxx/api/v1/upload
       # token: Bearer xxxxxxxxxxxxxx
       # resp: data.links.url
       # 以兰空图床V2为例，下列填写内容为：
       # fileName: image
       # tokenName: token
-      # url: https://xxxxxx/api/upload
+      # api: https://xxxxxx/api/upload
       # token: xxxxxxxxxxxxxx
       # resp: data.url
     #   fileName: # 根据版本二选一
@@ -389,4 +389,4 @@ default:
 api_host:
   ghapi: https://api.github.com
   ghraw: https://raw.githubusercontent.com
-  gist: https://gist.github.com
+  gist: https://gist.github.com