doc: kerneldoc.py: fix indentation

kerneldoc.py is mostly indented with 4 spaces (like PEP8 suggests);
replace the last remaining tabs for consistency.

No functional change.

Cc: Jani Nikula <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Vegard Nossum <[email protected]>
Reviewed-by: Randy Dunlap <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: vegard

Documentation/sphinx/kerneldoc.py

@@ -61,9 +61,9 @@ def run(self):
         env = self.state.document.settings.env
         cmd = [env.config.kerneldoc_bin, '-rst', '-enable-lineno']
 
-	# Pass the version string to kernel-doc, as it needs to use a different
-	# dialect, depending what the C domain supports for each specific
-	# Sphinx versions
+        # Pass the version string to kernel-doc, as it needs to use a different
+        # dialect, depending what the C domain supports for each specific
+        # Sphinx versions
         cmd += ['-sphinx-version', sphinx.__version__]
 
         filename = env.config.kerneldoc_srctree + '/' + self.arguments[0]