code format fixes, update docs

python3/vimspector/gadgets.py

@@ -21,7 +21,7 @@ import os
 
 GADGETS = {
   'vscode-cpptools': {
-    'language': ['c','cpp'],
+    'language': ['c', 'cpp', 'rust'],
     'download': {
       'url': 'https://github.com/Microsoft/vscode-cpptools/releases/download/'
              '${version}/${file_name}',

python3/vimspector/installer.py

@@ -230,7 +230,8 @@ def GadgetListToInstallerArgs( *gadget_list ):
       continue
 
     lang = gadget[ "language" ]
-    if isinstance(lang, list): lang = lang[0]
+    if isinstance(lang, list):
+      lang = lang[0]
 
     if not gadget.get( 'enabled', True ):
       installer_args.append( f'--force-enable-{lang}' )