Use go:generate for generating cheatsheets

This has several benefits:
- it's less code
- we're using the same mechanism to generate all our auto-generated files, so if
  someone wants to add a new one, it's clear which pattern to follow
- we can re-generate all generated files with a single command
  ("go generate ./...", or "make generate")
- we only need a single check on CI to check that all files are up to date (see
  previous commit)

docs/keybindings/Keybindings_en.md

@@ -1,4 +1,4 @@
-_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go run scripts/cheatsheet/main.go generate` from the project root._
+_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go generate ./...` from the project root._
 
 # Lazygit Keybindings
 

docs/keybindings/Keybindings_ja.md

@@ -1,4 +1,4 @@
-_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go run scripts/cheatsheet/main.go generate` from the project root._
+_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go generate ./...` from the project root._
 
 # Lazygit キーバインド
 

docs/keybindings/Keybindings_ko.md

@@ -1,4 +1,4 @@
-_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go run scripts/cheatsheet/main.go generate` from the project root._
+_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go generate ./...` from the project root._
 
 # Lazygit 키 바인딩
 

docs/keybindings/Keybindings_nl.md

@@ -1,4 +1,4 @@
-_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go run scripts/cheatsheet/main.go generate` from the project root._
+_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go generate ./...` from the project root._
 
 # Lazygit Sneltoetsen
 

docs/keybindings/Keybindings_pl.md

@@ -1,4 +1,4 @@
-_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go run scripts/cheatsheet/main.go generate` from the project root._
+_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go generate ./...` from the project root._
 
 # Lazygit Keybindings
 

docs/keybindings/Keybindings_ru.md

@@ -1,4 +1,4 @@
-_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go run scripts/cheatsheet/main.go generate` from the project root._
+_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go generate ./...` from the project root._
 
 # Lazygit Связки клавиш
 

docs/keybindings/Keybindings_zh-CN.md

@@ -1,4 +1,4 @@
-_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go run scripts/cheatsheet/main.go generate` from the project root._
+_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go generate ./...` from the project root._
 
 # Lazygit 按键绑定
 

docs/keybindings/Keybindings_zh-TW.md

@@ -1,4 +1,4 @@
-_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go run scripts/cheatsheet/main.go generate` from the project root._
+_This file is auto-generated. To update, make the changes in the pkg/i18n directory and then run `go generate ./...` from the project root._
 
 # Lazygit 鍵盤快捷鍵