[fix] comment in settings.yml 'Calculator plugin' --> 'Basic Calculator'

Reported by @GitTimeraider in [1]

[1] https://github.com/searxng/searxng/discussions/3529#discussioncomment-9605018
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/settings.yml

@@ -220,7 +220,7 @@ outgoing:
 #   - 'Ahmia blacklist'  # activation depends on outgoing.using_tor_proxy
 #   # these plugins are disabled if nothing is configured ..
 #   - 'Hostname replace'  # see hostname_replace configuration below
-#   - 'Calculator plugin'
+#   - 'Basic Calculator'
 #   - 'Open Access DOI rewrite'
 #   - 'Tor check plugin'
 #   # Read the docs before activate: auto-detection of the language could be