message: Fix link to config.md#termquiet
diff: @@ -176,6 +176,7 @@ supported environment variables are:
  [`target.<triple>.linker`]: config.md#targettriplelinker
  [`target.<triple>.runner`]: config.md#targettriplerunner
  [`target.<triple>.rustflags`]: config.md#targettriplerustflags
  +[`term.quiet`]: config.md#termquiet
  [`term.verbose`]: config.md#termverbose
  [`term.color`]: config.md#termcolor
  [`term.progress.when`]: config.md#termprogresswhen
  