_config.yml changes are not reflecting on generated website.

[saurabhkukade]

On my github repository for I am using github pages to generate static website and to change the default site configuration I have changed _config.yml file.

before:

author :
name : Name Lastname
email : [email protected]
github : username
after:

author : Saurabh Kukade
name : Saurabh Kukade
email : [email protected]
github : saurabhkukade
But still changes have not reflected on generated website. I have pushed this changes to github repository.