Puppet-lint showing errors (two spaces and trailing whitespaces)

edit

class entapps {

        dsc_package { 'mysqlconnector':
          dsc_ensure    => 'Present',
          dsc_name      => 'MySQL Connector Net 6.9.9',
          dsc_path      => 'D:\\DSCPackages\\mysql-connector-net-6.9.9.msi',
        }

       if $::hostname =~ /^erp-(udc|aws)-build(07|08)/ {
        package { 'tightvnc':
          ensure    => 2.8.8,
          provider  => 'chocolatey',
        }
    }

Puppet lint showing:

• ERROR: trailing whitespace found on line 20
  • ERROR: two-space soft tabs not used on line 21

Here is the line 21 from the above code : if $::hostname =~ /^erp-(udc|aws)-build(07|08)/ {

Can anyone explain the standards required to follow while writing puppet manifest and how I can resolve the issues within this manifest.

Thanks.