[format.python] initial formatting of the python code

This patch was generated by black [1]::

    make format.python

[1] https://github.com/psf/black

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/plugins/vim_hotkeys.py

@@ -1,9 +1,11 @@
 from flask_babel import gettext
 
 name = gettext('Vim-like hotkeys')
-description = gettext('Navigate search results with Vim-like hotkeys '
-                      '(JavaScript required). '
-                      'Press "h" key on main or result page to get help.')
+description = gettext(
+    'Navigate search results with Vim-like hotkeys '
+    '(JavaScript required). '
+    'Press "h" key on main or result page to get help.'
+)
 default_on = False
 preference_section = 'ui'