Fix PSData Default Values (#393)

Author: ThomasNieto

src/PowerShellGet/private/functions/Get-PrivateData.ps1

@@ -31,10 +31,10 @@ function Get-PrivateData
         # Prerelease = ''
 
         # Flag to indicate whether the module requires explicit user acceptance for install/update/save
-        # RequireLicenseAcceptance = $false
+        # RequireLicenseAcceptance = `$false
 
         # External dependent modules of this module
-        # ExternalModuleDependencies = ''
+        # ExternalModuleDependencies = @()
 
     } # End of PSData hashtable