Improve curl commend, remove blank lines

doc/api/ci/lint.md

@@ -13,7 +13,7 @@ POST ci/lint
 | `content`  | string    | yes      | the .gitlab-ci.yaml content|
 
 ```bash
-curl -H "Content-Type: application/json" --request POST https://gitlab.example.com/api/v3/ci/lint -d '{"content": "{ \"image\": \"ruby:2.1\", \"services\": [\"postgres\"], \"before_script\": [\"gem install bundler\", \"bundle install\", \"bundle exec rake db:create\"], \"variables\": {\"DB_NAME\": \"postgres\"}, \"types\": [\"test\", \"deploy\", \"notify\"], \"rspec\": { \"script\": \"rake spec\", \"tags\": [\"ruby\", \"postgres\"], \"only\": [\"branches\"]}}"}'
+curl --header "Content-Type: application/json" https://gitlab.example.com/api/v3/ci/lint --data '{"content": "{ \"image\": \"ruby:2.1\", \"services\": [\"postgres\"], \"before_script\": [\"gem install bundler\", \"bundle install\", \"bundle exec rake db:create\"], \"variables\": {\"DB_NAME\": \"postgres\"}, \"types\": [\"test\", \"deploy\", \"notify\"], \"rspec\": { \"script\": \"rake spec\", \"tags\": [\"ruby\", \"postgres\"], \"only\": [\"branches\"]}}"}'
 ```
 
 Be sure to copy paste the exact contents of `.gitlab-ci.yml` as YAML is very picky about indentation and spaces.

lib/api/lint.rb

 module API
   class Lint < Grape::API
-
     namespace :ci do
       desc 'Validation of .gitlab-ci.yml content'
       params do
         requires :content, type: String, desc: 'Content of .gitlab-ci.yml'
       end
-
       post '/lint' do
         error = Ci::GitlabCiYamlProcessor.validation_message(params[:content])