Update interactive rebase demo (#3392)

**PR Description**

This is in anticipation of the new release which supports range-select.

- **Please check if the PR fulfills these requirements**

* [x] Cheatsheets are up-to-date (run `go generate ./...`)
* [x] Code has been formatted (see
[here](https://github.com/jesseduffield/lazygit/blob/master/CONTRIBUTING.md#code-formatting))
* [x] Tests have been added/updated (see
[here](https://github.com/jesseduffield/lazygit/blob/master/pkg/integration/README.md)
for the integration test guide)
* [x] Text is internationalised (see
[here](https://github.com/jesseduffield/lazygit/blob/master/CONTRIBUTING.md#internationalisation))
* [x] Docs (specifically `docs/Config.md`) have been updated if
necessary
* [x] You've read through your own file changes for silly mistakes etc

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1 files changed, 4 insertions, 1 deletions

diff --git a/README.md b/README.md
index ea8ae2bc7..879d2982b 100644
--- a/README.md
+++ b/README.md
@@ -114,10 +114,12 @@ Press space on the selected line to stage it, or press `v` to start selecting a
 
 ### Interactive Rebase
 
-Press `e` on a commit to start an interactive rebase on it: causing all above commits to become part of the TODO file. Then squash (`s`), fixup (`f`), drop (`d`), edit (`e`), move up (`ctrl+i`) or move down (`ctrl+j`) any of TODO commits, before continuing the rebase by bringing up the rebase options menu with `m` and then selecting `continue`.
+Press `i` to start an interactive rebase. Then squash (`s`), fixup (`f`), drop (`d`), edit (`e`), move up (`ctrl+i`) or move down (`ctrl+j`) any of TODO commits, before continuing the rebase by bringing up the rebase options menu with `m` and then selecting `continue`.
 
 You can also perform any these actions as a once-off (e.g. pressing `s` on a commit to squash it) without explicitly starting a rebase.
 
+This demo also uses shift+down to select a range of commits to move and fixup.
+
 ![interactive_rebase](../assets/demo/interactive_rebase-compressed.gif)
 
 ### Cherry-pick
@@ -314,6 +316,7 @@ Funtoo Linux has an autogenerated lazygit package in [dev-kit](https://github.co
 ```sh
 sudo emerge dev-vcs/lazygit
 ```
+
 ### Gentoo Linux
 
 Lazygit is not (yet) in main Gentoo portage, however an ebuild is available in [GURU overlay](https://github.com/gentoo-mirror/guru/tree/master/dev-vcs/lazygit)