wix: add censor docs to installer script

Spotted by Matt Harbison.

contrib/wix/help.wxs

@@ -1,53 +1,54 b''
 <?xml version="1.0" encoding="utf-8"?>
 <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
 
   <?include guids.wxi ?>
   <?include defines.wxi ?>
 
   <Fragment>
     <ComponentGroup Id='helpFolder'>
       <ComponentRef Id='help.root' />
       <ComponentRef Id='help.internals' />
     </ComponentGroup>
   </Fragment>
 
   <Fragment>
     <DirectoryRef Id="INSTALLDIR">
       <Directory Id="helpdir" Name="help" FileSource="$(var.SourceDir)">
         <Component Id="help.root" Guid="$(var.help.root.guid)" Win64='$(var.IsX64)'>
           <File Name="color.txt" />
           <File Name="config.txt" KeyPath="yes" />
           <File Name="dates.txt" />
           <File Name="diffs.txt" />
           <File Name="environment.txt" />
           <File Name="extensions.txt" />
           <File Name="filesets.txt" />
           <File Name="glossary.txt" />
           <File Name="hgignore.txt" />
           <File Name="hgweb.txt" />
           <File Name="merge-tools.txt" />
           <File Name="pager.txt" />
           <File Name="patterns.txt" />
           <File Name="phases.txt" />
           <File Name="revisions.txt" />
           <File Name="scripting.txt" />
           <File Name="subrepos.txt" />
           <File Name="templates.txt" />
           <File Name="urls.txt" />
         </Component>
 
         <Directory Id="help.internaldir" Name="internals">
           <Component Id="help.internals" Guid="$(var.help.internals.guid)" Win64='$(var.IsX64)'>
             <File Id="internals.bundles.txt"      Name="bundles.txt" KeyPath="yes" />
+            <File Id="internals.censor.txt"       Name="censor.txt" KeyPath="yes" />
             <File Id="internals.changegroups.txt" Name="changegroups.txt" />
             <File Id="internals.requirements.txt" Name="requirements.txt" />
             <File Id="internals.revlogs.txt"      Name="revlogs.txt" />
             <File Id="internals.wireprotocol.txt" Name="wireprotocol.txt" />
           </Component>
         </Directory>
 
       </Directory>
     </DirectoryRef>
   </Fragment>
 
 </Wix>