doc: robustify PDF build
authorThomas Monjalon <thomas@monjalon.net>
Wed, 22 May 2019 17:55:24 +0000 (19:55 +0200)
committerThomas Monjalon <thomas@monjalon.net>
Wed, 29 May 2019 11:02:56 +0000 (13:02 +0200)
commit1f7203d6155d473173dd4ba98cb81c46c6c1b5c8
tree48130ea67319d8e5ec5985c9ffd31c77fd1e54bf
parent6226c09e0cd1cb940a05493a45c5bad56c26c262
doc: robustify PDF build

In some environment like the current dpdk.org server,
there can be some errors due to symbols in titles,
as it was the case before this commit in DPDK 18.05:
commit 551d148944dc ("doc: remove flow API migration section")

! LaTeX Error: Bad math environment delimiter.

It can be avoided thanks to the Latex command \robustify.

Cc: stable@dpdk.org
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: John McNamara <john.mcnamara@intel.com>
doc/guides/conf.py