share: remove unexpected heading from "verbose" container in help test `test-gendoc-*.t` have been failing for me since 91425656e2b1 (share: add documentation about share-safe mode in `hg help -e share`, 2020-11-27) with this kind of output: ``` --- /usr/local/google/home/martinvonz/hg/tests/test-gendoc-ru.t +++ /usr/local/google/home/martinvonz/hg/tests/test-gendoc-ru.t.err @@ -2,3 +2,9 @@ $ $TESTDIR/check-gendoc ru checking for parse errors + gendoc.txt:12818: (SEVERE/4) Unexpected section title. + + Sharing requirements and configs of source repository with shares + ----------------------------------------------------------------- + Exiting due to level-4 (SEVERE) system message. + [1] ``` This patch fixes that. Differential Revision: https://phab.mercurial-scm.org/D9552