Update reference for ML

hundong2 · hundong2 · commit 68a9c4d094c3 · 2026-04-12T23:19:21.000+09:00
diff --git a/dacon/reference.md b/dacon/reference.md
@@ -1,3 +1,9 @@
 # site information
 
 - [Logistic regression](https://wikidocs.net/32012). 
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+## google ML course 
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+- [Google ML Course](https://developers.google.com/machine-learning/crash-course/linear-regression/loss?hl=ko). 
+- 
