Update conf.py

Author: mcbarton

docs/source/conf.py

@@ -36,7 +36,7 @@
                           --contents notebooks/images/marie.png \
                           --contents notebooks/audio/audio.wav \
                           --output-dir $READTHEDOCS_OUTPUT/html/xeus-cpp;'.format(XEUS_CPP_ROOT)
-    subprocess.call('cd {0}/xeus-cpp/docs/; doxygen', shell=True)
+    subprocess.call('cd {0}/docs/; doxygen', shell=True)
     subprocess.call(command_emscripten.format(XEUS_CPP_ROOT), shell=True)