Add link to KOSSCON 2015

index.adoc

@@ -15,7 +15,7 @@ You can see my activities about open-source software in link:https://github.com/
 * **Mar. 2, 2016** - I joined Data Mining Laboratory at Seoul National University as a master's student.
 * **Feb. 26, 2016** - I gave a talk named "link:http://j.mp/d2-campus-seminar-4th-park[학교에선 알려주지 않는 오픈 소스 이야기]"
   at link:http://d2.naver.com/news/2137145[NAVER 4th D2 Campus Seminar], Korea.
-* **Dec. 22, 2015** - I gave a talk named "link:http://j.mp/ossdevconf-2015-park[Introduction to Apache Flink]" at Open-source Software Developer Center Conference in Korea.
+* **Dec. 22, 2015** - I gave a talk named "link:http://j.mp/ossdevconf-2015-park[Introduction to Apache Flink]" at link:https://2016.kosscon.kr/2015[KOSSCON 2015].
 
 [.cv-list]
 == Education