Doc fixes. [skip ci]

Author: mcmtroffaes

doc/usage.rst

@@ -627,12 +627,14 @@ you can remove them using a css style sheet, as follows.
 First, add this to your ``conf.py``:
 
 .. code-block:: python
+
     html_static_path = ["_static"]
     html_css_files = ["custom.css"]
 
 Then, use this code for your ``_static/custom.css`` style sheet:
 
 .. code-block:: css
+
     .backrefs {
         display: none;
     }

src/sphinxcontrib/bibtex/bibfile.py

@@ -7,8 +7,6 @@
 .. autoclass:: BibData
     :members:
 
-.. autofunction:: normpath_filename
-
 .. autofunction:: parse_bibdata
 
 .. autofunction:: is_bibdata_outdated

src/sphinxcontrib/bibtex/foot_roles.py

@@ -2,7 +2,7 @@
 .. autoclass:: FootCiteRole
     :show-inheritance:
 
-    .. automethod:: result_nodes
+    .. automethod:: run
 """
 
 from typing import TYPE_CHECKING, List, Optional, Tuple, cast