(GH-982) Note AutoUninstaller in uninstall template

Provide guidance at the top of the uninstall template that the
uninstall script may be unnecessary due to AutoUninstaller and licensed
version enhancements.

src/chocolatey/infrastructure.app/templates/ChocolateyUninstallTemplate.cs

@@ -22,6 +22,9 @@ public class ChocolateyUninstallTemplate
 #   $f='c:\path\to\thisFile.ps1'
 #   gc $f | ? {$_ -notmatch ""^\s*#""} | % {$_ -replace '(^.*?)\s*?[^``]#.*','$1'} | Out-File $f+"".~"" -en utf8; mv -fo $f+"".~"" $f
 
+## NOTE: In 80-90% of the cases (95% with licensed versions due to Package Synchronizer and other enhancements), you may 
+## not need this file due to AutoUninstaller. See https://chocolatey.org/docs/commands-uninstall
+
 ## If this is an MSI, cleaning up comments is all you need.
 ## If this is an exe, change installerType and silentArgs
 ## Auto Uninstaller should be able to detect and handle registry uninstalls (if it is turned on, it is in preview for 0.9.9).