Commit 29d7d8f44df24d6876c527d442eb42aee7227d6b has introduced another
section with the ID "sec-release-19.09-incompatibilities", which
subsequently causes the build to fail.
I just merged both sections and the manual is now building again.
Signed-off-by: aszlig <aszlig@nix.build>
f98b4b0fda