package ubuntu-docs 14.04.3 failed to install/upgrade: symbolic link '/usr/share/help/si/ubuntu-help/accounts-disable-service.page' size has changed from 67 to 60

As root, apt-get upgrade produces the output:

Preparing to unpack .../ubuntu-docs_14.04.4_all.deb ...
Unpacking ubuntu-docs (14.04.4) over (14.04.3) ...
dpkg: error processing archive /var/cache/apt/archives/ubuntu-docs_14.04.4_all.deb (--unpack):
 symbolic link '/usr/share/help/si/ubuntu-help/accounts-disable-service.page' size has changed from 67 to 60
[...]
Errors were encountered while processing:
 /var/cache/apt/archives/ubuntu-docs_14.04.4_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

The symlink in question looks like this:

lrwxrwxrwx 1 root root 67 Apr 8 03:46 /usr/share/help/si/ubuntu-help/accounts-disable-service.page -> ../../../help-langpack/si/ubuntu-help/display-dimscreen.page

My system is:

Description: Ubuntu 14.04.1 LTS
Release: 14.04

running on a VirtualBox VM under a Win7 host.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: ubuntu-docs 14.04.3
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic i686
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: i386
Date: Tue Jul 22 09:37:28 2014
DuplicateSignature: package:ubuntu-docs:14.04.3:symbolic link '/usr/share/help/si/ubuntu-help/accounts-disable-service.page' size has changed from 67 to 60
ErrorMessage: symbolic link '/usr/share/help/si/ubuntu-help/accounts-disable-service.page' size has changed from 67 to 60
InstallationDate: Installed on 2010-10-22 (1369 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
PackageArchitecture: all
SourcePackage: ubuntu-docs
Title: package ubuntu-docs 14.04.3 failed to install/upgrade: symbolic link '/usr/share/help/si/ubuntu-help/accounts-disable-service.page' size has changed from 67 to 60
UpgradeStatus: Upgraded to trusty on 2014-04-24 (89 days ago)