SEOUL, South Korea—Two-time Olympic short-track champion Shim Suk-hee has been suspended for two months over her text messages that authorities say “marred the dignity of athletes,” a decision that could bar her from attending the Beijing Winter Olympics. The Korea Staking Union said Wednesday it decided to suspend Shim from the national team during a disciplinary meeting held Tuesday. Shim can appeal the ruling to the Korean Sport & Olympic Committee or file for an injunction with a local court. Even if either of them accepts her appeal, the Korea Staking Union isn’t obliged to overturn or le…