message: Fix Highlight fenced code block with extra { } argument
diff: ],
  "repository": {
  "fenced_code_block_latex": {
  - "begin": "(^|\\G)(\\s*)(`{3,}|~{3,})\\s*(latex)\\s*$",
  + "begin": "(^|\\G)(\\s*)(`{3,}|~{3,})\\s*(latex)\\s*(?:\\{[^\\{\\}]*\\})?\\s*$",
  "name": "markup.fenced_code.block.markdown",
  "end": "(^|\\G)(\\2|\\s{0,3})(\\3)\\s*$",
  "beginCaptures": {
  