main: fix code style

src/dragiyski/vulkan/registry/__init__.py

@@ -1,5 +1,6 @@
 from .taxonomy import Taxonomy
 
+
 def __init__(globals):
     import importlib.resources
     from .xml import Node, parse_xml
@@ -11,5 +12,6 @@ def __init__(globals):
 
     globals['taxonomy'] = Taxonomy(*roots)
 
+
 __init__(globals())
 del __init__

src/dragiyski/vulkan/registry/taxonomy.py

@@ -976,4 +976,3 @@ class Taxonomy:
                     relationship_type = 'input_of' if 'const' in arg_type_prefix or arg_type_suffix.startswith('const') else 'output_of'
                     if arg_info['class'] in ('struct', 'union'):
                         self._init_relationship_complex(command_name, arg_info['type'], relationship_type)
-