docs(config): adds vim docs for atuinsh/atuin#1553 (#5)

src/content/docs/configuration/config.mdx

@@ -306,6 +306,14 @@ This technically defaults to true for new users, but false for existing. We
 have set `enter_accept = true` in the default config file. This is likely to
 change to be the default for everyone in a later release.
 
+## vim
+Default: false
+
+When set to true, there will be two "modes:" Normal and Insert. In normal,
+you may use 'k' and 'j' to navigate the list like in vim. Pressing 'i' whilst
+in Normal mode will change it to Insert mode, allowing you to search. Pressing
+Esc will exit Insert mode. Add `vim = true` to your config to enable this feature.
+
 ## Stats
 This section of client config is specifically for configuring Atuin stats calculations
 

src/content/docs/configuration/key-binding.mdx

@@ -16,7 +16,7 @@ filter_mode_shell_up_key_binding = "directory" # or global, host, directory, etc
 
 ## Disable up arrow
 
-Our default up-arrow binding can be a bit contentious. Some people love it, some people hate it. Many people who found it a bit jarring at first have since come to love it, so give it a try! 
+Our default up-arrow binding can be a bit contentious. Some people love it, some people hate it. Many people who found it a bit jarring at first have since come to love it, so give it a try!
 
 It becomes much more powerful if you consider binding a different filter mode to the up arrow. For example, on "up" Atuin can default to searching all history for the current directory only, while ctrl-r searches history globally. See the [config](https://atuin.sh/docs/config/#filter_mode_shell_up_key_binding) for more.
 
@@ -159,3 +159,12 @@ $env.config = (
 | ⬇                                        | Select the next item on the list                                              |
 
 
+### Vim mode
+If [vim is enabled in the config](https://docs.atuin.sh/configuration/config/#vim), the following keybindings are enabled:
+
+| Shortcut | Mode   | Action                                |
+| -------- | ------ | ------------------------------------- |
+| k        | Normal | Selects the next item on the list     |
+| j        | Normal | Selects the previous item on the list |
+| i        | Normal | Enters insert mode                    |
+| Esc      | Insert | Enters normal mode                    |