Update news-item-3.md

Author: woo-kim

_news/news-item-3.md

@@ -1,6 +1,6 @@
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 order: 3
-link: https://pytorch.org/blog/ecosystem_day_2021/
-summary: Announcing PyTorch Ecosystem Day - April 21, 2021
+link: https://github.com/pytorch/pytorch/releases/tag/v1.8.1
+summary: PyTorch 1.8.1 is now available with improvements and bug fixes
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