CDRIVER-4413 adjust configuration for building docs with Sphinx 5.0+

Author: rcsanchez97

src/libmongoc/doc/conf.py

@@ -29,6 +29,8 @@
 exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
 master_doc = 'index'
 
+intersphinx_disabled_reftypes = []
+
 # don't fetch libbson's inventory from mongoc.org during build - Debian and
 # Fedora package builds must work offline - maintain a recent copy here
 intersphinx_mapping = {