replace doc role for bundle docs with external ref
bug #4442 replace doc role for bundle docs with external ref (xabbuh)

This PR was submitted for the master branch but it was merged into the 2.5 branch instead (closes #4442).

Discussion
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replace doc role for bundle docs with external ref

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.5+
| Fixed tickets |

Commits
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d27bcc5 replace doc role for bundle docs with external ref
Merge branch '2.5' into 2.6

Conflicts:
	book/security.rst