build: Correct program path in doc/Makefile.am

Prevent help2man from invoking the flex program installed on the
builder's system to generate the man page.
This commit is contained in:
Explorer09 2024-05-09 22:29:14 +08:00 committed by Will Estes
parent 3c70fb6932
commit 2d08e2f469

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@ -48,4 +48,4 @@ flex.1: $(top_srcdir)/configure.ac $(top_srcdir)/src/cpp-flex.skl $(top_srcdir)/
--source='The Flex Project' \
--manual='Programming' \
--output=$@ \
flex
./flex