Make links to docs with anchors working again.
Make links to docs with anchors working again.

This way, we can still use links like:
http://bazel.io/docs/bazel-user-manual.html#sandboxing

--
Change-Id: Id76a9795eaaaa0cd420df83440faada584c8621b
Reviewed-on: https://bazel-review.googlesource.com/c/5950/
MOS_MIGRATED_REVID=132654093

akira-baruah/bazel,bazelbuild/bazel,cushon/bazel,Asana/bazel,snnn/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,perezd/bazel,werkt/bazel,juhalindfors/bazel-patches,Asana/bazel,juhalindfors/bazel-patches,snnn/bazel,werkt/bazel,spxtr/bazel,dslomov/bazel,mrdomino/bazel,iamthearm/bazel,davidzchen/bazel,werkt/bazel,damienmg/bazel,kchodorow/bazel-1,dslomov/bazel,variac/bazel,zhexuany/bazel,ButterflyNetwork/bazel,snnn/bazel,hermione521/bazel,iamthearm/bazel,dslomov/bazel-windows,damienmg/bazel,spxtr/bazel,juhalindfors/bazel-patches,cushon/bazel,dslomov/bazel-windows,ulfjack/bazel,katre/bazel,dslomov/bazel,twitter-forks/bazel,kchodorow/bazel-1,twitter-forks/bazel,ulfjack/bazel,mbrukman/bazel,davidzchen/bazel,katre/bazel,twitter-forks/bazel,mikelikespie/bazel,mrdomino/bazel,damienmg/bazel,safarmer/bazel,spxtr/bazel,kchodorow/bazel,variac/bazel,davidzchen/bazel,Asana/bazel,ButterflyNetwork/bazel,iamthearm/bazel,cushon/bazel,zhexuany/bazel,snnn/bazel,iamthearm/bazel,variac/bazel,perezd/bazel,dslomov/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,werkt/bazel,akira-baruah/bazel,LuminateWireless/bazel,ulfjack/bazel,variac/bazel,safarmer/bazel,bazelbuild/bazel,akira-baruah/bazel,zhexuany/bazel,dslomov/bazel-windows,LuminateWireless/bazel,mikelikespie/bazel,bazelbuild/bazel,kchodorow/bazel-1,LuminateWireless/bazel,spxtr/bazel,perezd/bazel,snnn/bazel,perezd/bazel,katre/bazel,zhexuany/bazel,variac/bazel,mbrukman/bazel,LuminateWireless/bazel,mbrukman/bazel,meteorcloudy/bazel,ulfjack/bazel,spxtr/bazel,safarmer/bazel,juhalindfors/bazel-patches,dropbox/bazel,kchodorow/bazel,meteorcloudy/bazel,aehlig/bazel,mbrukman/bazel,dropbox/bazel,dropbox/bazel,bazelbuild/bazel,mikelikespie/bazel,akira-baruah/bazel,aehlig/bazel,kchodorow/bazel-1,spxtr/bazel,perezd/bazel,ButterflyNetwork/bazel,kchodorow/bazel,kchodorow/bazel,bazelbuild/bazel,kchodorow/bazel-1,aehlig/bazel,kchodorow/bazel-1,snnn/bazel,spxtr/bazel,dropbox/bazel,snnn/bazel,zhexuany/bazel,meteorcloudy/bazel,bazelbuild/bazel,mikelikespie/bazel,mrdomino/bazel,davidzchen/bazel,hermione521/bazel,Asana/bazel,hermione521/bazel,meteorcloudy/bazel,hermione521/bazel,kchodorow/bazel,akira-baruah/bazel,kchodorow/bazel,Asana/bazel,perezd/bazel,aehlig/bazel,davidzchen/bazel,LuminateWireless/bazel,LuminateWireless/bazel,katre/bazel,zhexuany/bazel,juhalindfors/bazel-patches,juhalindfors/bazel-patches,werkt/bazel,safarmer/bazel,ButterflyNetwork/bazel,Asana/bazel,perezd/bazel,iamthearm/bazel,twitter-forks/bazel,damienmg/bazel,davidzchen/bazel,damienmg/bazel,davidzchen/bazel,twitter-forks/bazel,mbrukman/bazel,akira-baruah/bazel,dslomov/bazel-windows,mrdomino/bazel,safarmer/bazel,dslomov/bazel-windows,twitter-forks/bazel,ulfjack/bazel,dslomov/bazel,mikelikespie/bazel,mikelikespie/bazel,mrdomino/bazel,iamthearm/bazel,katre/bazel,katre/bazel,mbrukman/bazel,aehlig/bazel,Asana/bazel,variac/bazel,damienmg/bazel,dslomov/bazel-windows,cushon/bazel,dropbox/bazel,ulfjack/bazel,ulfjack/bazel,variac/bazel,dropbox/bazel,hermione521/bazel,aehlig/bazel,damienmg/bazel,kchodorow/bazel,dslomov/bazel,cushon/bazel,mrdomino/bazel,hermione521/bazel,dslomov/bazel,werkt/bazel,cushon/bazel,safarmer/bazel,aehlig/bazel,twitter-forks/bazel,meteorcloudy/bazel,juhalindfors/bazel-patches