Fix style checks

doc/ext/doctest.rst

@@ -182,7 +182,7 @@ The doctest extension uses the following configuration values:
 .. confval:: doctest_default_flags
 
    By default, these options are enabled:
-   
+
    - ``ELLIPSIS``, allowing you to put ellipses in the expected output that
      match anything in the actual output;
    - ``IGNORE_EXCEPTION_DETAIL``, causing everything following the leftmost

doc/ext/inheritance.rst

@@ -40,7 +40,7 @@ It adds this directive:
       included.
 
    .. versionchanged:: 1.5
-      Added ``caption`` option 
+      Added ``caption`` option
 
 
 New config values are:

tests/test_directive_code.py

@@ -228,7 +228,8 @@ def test_literalinclude_file_whole_of_emptyline(app, status, warning):
     app.builder.build_all()
     latex = (app.outdir / 'Python.tex').text(encoding='utf-8').replace('\r\n', '\n')
     includes = (
-        '\\begin{sphinxVerbatim}[commandchars=\\\\\\{\\},numbers=left,firstnumber=1,stepnumber=1]\n'
+        '\\begin{sphinxVerbatim}'
+        '[commandchars=\\\\\\{\\},numbers=left,firstnumber=1,stepnumber=1]\n'
         '\n'
         '\n'
         '\n'