docs: Makefile: wrap SPHINXDIRS help text

When using `make help`, SPHINXDIR doesn't wrap around 80 characters,
causing text to overflow or wrap in incorrect ways,
which then makes the text difficult to read

Signed-off-by: Mustafa Elrasheid <mustafaelrasheid@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251227125244.6407-1-mustafaelrasheid@gmail.com>

diff --git a/Documentation/Makefile b/Documentation/Makefile
index e96ac6dcac4f1f5b43fc23777e490bbae2c1ea3c..377a449656c8174347ed1f8c779964c66ddf1746 100644 (file)
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -98,7 +98,8 @@ dochelp:
        @echo  '  cleandocs       - clean all generated files'
        @echo
        @echo  '  make SPHINXDIRS="s1 s2" [target] Generate only docs of folder s1, s2'
-       @echo  '  top level values for SPHINXDIRS are: $(_SPHINXDIRS)'
+       @echo  '  top level values for SPHINXDIRS are:'
+       @echo  '$(_SPHINXDIRS)' | fmt -s -w 75 -g 75 | sed 's/^/    /'
        @echo  '  you may also use a subdirectory like SPHINXDIRS=userspace-api/media,'
        @echo  '  provided that there is an index.rst file at the subdirectory.'
        @echo