Editora 0.11.0. Archived, so links from that release keep working. Read the 0.18.5 page →
AI: Rewrite Selection…
ai.rewriteSelection Rewrite the selection per your instruction, as one undoable edit.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for AI: Rewrite Selection…, then press Enter. It has no default keybinding, but you can bind one in Settings → Keymaps.