CONT-568 : fixing typo

Author: malikparvez

manifests/registry.pp

@@ -135,7 +135,7 @@
       } elsif $ensure == 'present' {
         exec { 'compute-hash':
           command     => stdlib::deferrable_epp('docker/windows/compute_hash.ps1.epp', { 'passfile' => $passfile }),
-          environment => Deferred('docker::env', [$exec_env]),,
+          environment => Deferred('docker::env', [$exec_env]),
           provider    => $exec_provider,
           logoutput   => true,
           unless      => stdlib::deferrable_epp('docker/windows/check_hash.ps1.epp', { 'passfile' => $passfile },