update talks

Author: madawei2699

content/talk.zh-cn.md

@@ -5,6 +5,17 @@ keywords = ""
 outputs = "html"
 +++
 
-- [i18N in Java](https://talk.bmpi.dev/2021/i18n-java)
-- [Web Traffic Research](https://talk.bmpi.dev/2020/web-traffic-research)
-- [Elixir](https://talk.bmpi.dev/2019/elixir)
+## i18N in Java
+
+- [Slide](https://talk.bmpi.dev/2021/i18n-java)
+- [PDF](https://github.com/bmpi-dev/talk.bmpi.dev/blob/master/slides/2021/i18n_java/i18n_java.pdf)
+
+## Web Traffic Research
+
+- [Slide](https://talk.bmpi.dev/2020/web-traffic-research)
+- [PDF](https://github.com/bmpi-dev/talk.bmpi.dev/blob/master/slides/2020/web_traffic_research/web_traffic_research.pdf)
+
+## Elixir
+
+- [Slide](https://talk.bmpi.dev/2019/elixir)
+- [PDF](https://github.com/bmpi-dev/talk.bmpi.dev/blob/master/slides/2019/elixir/elixir.pdf)