[476572] Update custom style documentation

Bug: 476572
Change-Id: Ice2d9510e2919fa03df94140e7675429da6fcd36
Signed-off-by: Maxime Porhel <maxime.porhel@obeo.fr>
Cherry-picked-from: ec3b7c511b30a0027dc33947461becab662d62b1
2 files changed