。。
※ Fixed the typo. Thanks for pointing it out.
Literal
※ Typo fixed. Your-pointing-out thanks is.
A stock addendum/correction note, common in blog edits and online posts. The leading ※ is the 'notation mark' used in Japanese writing to flag footnotes, caveats, and corrections. サンクス is the casual loanword form of 'thanks' — lighter than the formal ありがとうございます. ご指摘 is the polite お/ご prefix for 'your pointing-out/correction'.