[doc] fix biblio generation

Author: simogasp

doc/sphinx/source/conf.py

@@ -53,6 +53,7 @@ def configure_doxyfile(input_dir, output_dir):
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = ['breathe', 'sphinxcontrib.bibtex']
+bibtex_bibfiles = ['biblio.bib']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']