[sphinx] Fixed sphinx

doc/guide_audio_extractor.rst

@@ -6,14 +6,14 @@ This subpackage is part of ``bob.learn.pytorch``  package to extract features fr
 trained with pytorch_.
 
 For this purpose, you can specify your feature extractor in configuration
-file to be used together with the ``verifiy.py`` script from :ref:`bob.bio.base_legacy <bob.bio.base_legacy>`.
+file to be used together with the ``verifiy.py`` script from `bob.bio.base_legacy <bob.bio.base_legacy>`.
 
 
 DltResNet Model
 ---------------
 
 
-:ref:`bob.bio.base_legacy <bob.bio.base_legacy>` wrapper DltResNet model.
+`bob.bio.base_legacy <bob.bio.base_legacy>` wrapper DltResNet model.
 
 
 .. note::
@@ -29,7 +29,7 @@ ResNet Model
 ------------
 
 
-:ref:`bob.bio.base_legacy <bob.bio.base_legacy>` wrapper ResNet model.
+`bob.bio.base_legacy <bob.bio.base_legacy>` wrapper ResNet model.
 
 
 .. note::