Use single quotes for paths in version helper
Use single quotes for paths in version helper

Can't copy and paste without swapping or escaping the quotes as is.
ryanwinchester/laravel-docs,ryanwinchester/laravel-docs,iwzh/laravel-docs,chenrenzhen/laravel-docs-china,iwzh/laravel-doc-offline,khs1994-gitbook/laravel-docs,laravel-china/laravel-docs