message: Fix mathbf shortcut
  Mathbf used to have `mathbb` as the snippet contents.
diff: },
  "mathbf": {
  "prefix": "MBF",
  - "body": "\\mathbb{${1:${TM_SELECTED_TEXT:text}}}",
  + "body": "\\mathbf{${1:${TM_SELECTED_TEXT:text}}}",
  "description": "Use a bold font"
  },
  "mathbb": {
  