make prettier ignore file code example

Example 1: prettier don't format line

// prettier-ignore						JS
{/* prettier-ignore */}					JSX
<!-- prettier-ignore -->				HTML / Markdown
/* prettier-ignore */					CSS

Example 2: disable prietter for lines

matrix(1, 0, 0, 0, 1, 0, 0, 0, 1);

// prettier-ignore
matrix(
  1, 0, 0,
  0, 1, 0,
  0, 0, 1
)