chore: add hacking scale (#276)

Author: RichardBray

README.md

@@ -440,6 +440,7 @@ Thanks to all [contributors](https://github.com/zudochkin/awesome-newsletters/gr
 - [MindByte Weekly Pulse](https://mindbyte.beehiiv.com) Fuel your week with MindByte Weekly Pulse, your indispensable guide to navigating the dynamic world of GitHub, Azure, and .NET. Discover the latest insights, tips, and trends, curated by an industry expert, delivered to your inbox every week.
 - [TechTok Today](https://techtok.today). Daily summarised and curated news in technology (as newsletter and in-website stories) picked from the most popular sources and fresh engineering blogs articles from leading tech companies.
 - [Weekly Engineering Newsletter](https://weeklyengineeringnewsletter.substack.com). Every Sunday, delivering a digest of the week's most fascinating finds in the tech world.
+- [Hacking Scale](https://newsletter.betterstack.com/). A bi-weekly newsletter about building and scaling software from engineers at Better Stack.
 
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