Format markdown on save using prettier

[trymeouteh]

When the Prettier VSCode extension is installed and is setup to format markdown files. Please allow for VSCode to format the markdown file when saving the changes made to the markdown file in the markdown editor

When you save a file in the markdown editor mode, it does format the file but the formatted changes do not show in the editor. When you save a file in the raw editor, it does format the file and the changes are shown in the editor.