Makefile.sphinx: Fix some apidoc exclude patterns

Django settings modules were no longer filtered out from apidoc
processing when building standalone swh package documentation.

Makefile.sphinx

@@ -12,7 +12,7 @@ SPHINX_SRCDIR = .
 # relative to docs/ dir. Hence "." exclude the docs/ dir itself
 APIDOC_EXCLUDES = conftest.py setup.py
 APIDOC_EXCLUDES += */tests/* */migrations/* */wsgi.py */conftest.py
-APIDOC_EXCLUDES += deposit/settings/* web/settings/* dataset/*
+APIDOC_EXCLUDES += */deposit/settings/* */web/settings/* */dataset/*
 APIDOC_EXCLUDES += bin build dist utils node_modules
 APIDOC_SWH_EXCLUDES = $(patsubst %,"../%",$(APIDOC_EXCLUDES))