Fix minor typo in Dockerfile

Author: cnotin

Dockerfile

@@ -6,5 +6,5 @@ RUN pwsh -c "if ('${VERSION}' -eq 'latest') { Install-Module Microsoft.Graph -Sc
 RUN pwsh -c "if ('${VERSION}' -eq 'latest') { Install-Module Microsoft.Graph.Beta -Scope CurrentUser -AllowClobber -Force} else { Install-Module Microsoft.Graph.Beta -Scope CurrentUser -AllowClobber -Force -RequiredVersion ${VERSION} }"
 RUN pwsh -c "if (!(Test-Path -Path \$PROFILE)) { New-Item -ItemType File -Path \$PROFILE -Force } echo 'Import-Module Microsoft.Graph.Authentication' >> \$PROFILE"
 
-LABEL description="# Welcome to Microsoft Graph PowrShell \
-To start learning about the module checkout the [getting started documentation](https://docs.microsoft.com/en-us/powershell/microsoftgraph/get-started)"
+LABEL description="# Welcome to Microsoft Graph PowerShell \
+To start learning about the module checkout the [getting started documentation](https://docs.microsoft.com/en-us/powershell/microsoftgraph/get-started)"