The link checker at http://validator.w3.org/checklink reports:

The links below are not broken, but the document does not use the exact URL, and the links were redirected. It may be a good idea to link to the final location, for the sake of speed.

warning Line: 437 http://docbook.github.com/release/2.0.7/base/js/prism.js redirected to http://docbook.github.io/release/2.0.7/base/js/prism.js
Status: 301 -> 200 OK

This is a permanent redirect. The link should be updated.

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warning Line: 19 http://docbook.github.com/release/2.0.7/base/css/db-prism.css redirected to http://docbook.github.io/release/2.0.7/base/css/db-prism.css
Status: 301 -> 200 OK

This is a permanent redirect. The link should be updated.

*****

warning Line: 149 http://www.w3.org/TR/xlink11 redirected to http://www.w3.org/TR/xlink11/
Status: 301 -> 200 OK

The link is missing a trailing slash, and caused a redirect. Adding the trailing slash would speed up browsing.

*****

warning Line: 19 http://docbook.github.com/release/2.0.7/base/js/dbmodnizr.js redirected to http://docbook.github.io/release/2.0.7/base/js/dbmodnizr.js
Status: 301 -> 200 OK

This is a permanent redirect. The link should be updated.

*****

warning Line: 19 http://docbook.github.com/release/2.0.7/base/css/prism.css redirected to http://docbook.github.io/release/2.0.7/base/css/prism.css
Status: 301 -> 200 OK

This is a permanent redirect. The link should be updated.

*****

warning Lines: 43, 115 http://www.oasis-open.org/committees/docbook redirected to https://www.oasis-open.org/committees/docbook/
Status: 301 -> 200 OK

This is a permanent redirect. The link should be updated.

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warning Line: 360 http://lists.oasis-open.org/archives/docbook-tc/201203/msg00000.html redirected to https://lists.oasis-open.org/archives/docbook-tc/201203/msg00000.html
Status: 301 -> 200 OK

This is a permanent redirect. The link should be updated.

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warning Lines: 19, 106 http://www.oasis-open.org/ redirected to https://www.oasis-open.org/
Status: 301 -> 200 OK

This is a permanent redirect. The link should be updated.

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warning Line: 111 http://www.oasis-open.org/policies-guidelines/trademark redirected to https://www.oasis-open.org/policies-guidelines/trademark
Status: 301 -> 200 OK

This is a permanent redirect. The link should be updated.

*****

warning Line: 46 http://www.oasis-open.org/committees/docbook/ipr.php redirected to https://www.oasis-open.org/committees/docbook/ipr.php
Status: 301 -> 200 OK

This is a permanent redirect. The link should be updated.

*****

warning Line: 143 http://www.w3.org/TR/REC-xml redirected to http://www.w3.org/TR/REC-xml/
Status: 301 -> 200 OK

The link is missing a trailing slash, and caused a redirect. Adding the trailing slash would speed up browsing.

*****

warning Line: 60 http://www.oasis-open.org/policies-guidelines/ipr redirected to https://www.oasis-open.org/policies-guidelines/ipr
Status: 301 -> 200 OK

This is a permanent redirect. The link should be updated.