chore(nanoserver): add missing double quote

Author: lemeurherve

windows/nanoserver/Dockerfile

@@ -125,7 +125,7 @@ RUN [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tl
     Add-Content -Path "C:\ProgramData\ssh\sshd_config" -Value ('       AuthorizedKeysFile C:/Users/{0}/.ssh/authorized_keys' -f $env:JENKINS_AGENT_USER) ; `
     New-Item -Path HKLM:\SOFTWARE -Name OpenSSH -Force | Out-Null ; `
     New-ItemProperty -Path HKLM:\SOFTWARE\OpenSSH -Name DefaultShell -Value 'C:\Program Files\Powershell\pwsh.exe' -PropertyType string -Force | Out-Null ; `
-    Remove-Item -Path "C:\ProgramData\ssh\ssh_host*_key*
+    Remove-Item -Path "C:\ProgramData\ssh\ssh_host*_key*"
 
 COPY CreateProfile.psm1 C:/