README search keybinding description is inaccurate

[metakirby5]

The README states one of the keybindings is as follows:

Shift-s - search the highlighted selection directly inside a search engine (defaults to google).

However, this did not work for me, and I had to manually add set -g @open-S 'https://www.google.com/search?q=' to my configuration to get the keybinding. Either the default keybinding should be fixed, or the README updated to reflect the fact that the keybinding is in fact not default.