Editora 0.9.10. Archived, so links from that release keep working. Read the 0.16.0 page →
Table: Insert…
markdown.insertTable Insert a Markdown table (pick its size).
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Table: Insert…, then press Enter. It has no default keybinding, but you can bind one in Settings → Keymaps.