build-sys: do not require everything to be rebuild to push man pages (#5521)

When the doc-sync target was created, we didn't have man target yet.

diff --git a/Makefile.am b/Makefile.am
index 2a56107..7ee6c59 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -6637,7 +6637,7 @@ git-tar:
 www_target = www.freedesktop.org:/srv/www.freedesktop.org/www/software/systemd
 
 .PHONY: doc-sync
-doc-sync: all
+doc-sync: man
        rsync -rlv --delete-excluded --include="*.html" --exclude="*" --omit-dir-times man/ $(www_target)/man/
 
 .PHONY: install-tree