安装7zip4PowerShell模块后，如果我在其任何cmdlet上调用Get-Help，我会收到消息
Get-Help cannot find the Help files for this cmdlet on this computer. It is displaying only partial help.
-- To download and install Help files for the module that includes this cmdlet, use Update-Help.
如果我单独打电话给update-help，它就不会改变任何内容。
如果我致电update-help -Module 7zip4PowerShell，我会收到以下信息：
PS C:\windows\system32> update-help -Module 7zip4PowerShell
update-help : Failed to update Help for the module(s) :
'7Zip4Powershell'
The HelpInfoURI https://github.com/thoemmi/7Zip4Powershell does not start with HTTP.
At line:1 char:1
+ update-help -Module 7zip4PowerShell
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (HelpInfoUri:Uri) [Update-Help], Exception
+ FullyQualifiedErrorId : InvalidHelpInfoUriFormat,Microsoft.PowerShell.Commands.UpdateHelpCommand
我做错了什么？