Update README.md (#660)

README.md

@@ -111,7 +111,7 @@ Explore a hands-on [simulated example](https://pymc-marketing.readthedocs.io/en/
 - [Improving the Speed and Accuracy of Bayesian Marketing Mix Models](https://www.pymc-labs.com/blog-posts/reducing-customer-acquisition-costs-how-we-helped-optimizing-hellofreshs-marketing-budget/)
 - [Johns, Michael and Wang,  Zhenyu. "A Bayesian Approach to Media Mix Modeling"](https://www.youtube.com/watch?v=UznM_-_760Y)
 - [Orduz, Juan. "Media Effect Estimation with PyMC: Adstock, Saturation & Diminishing Returns"](https://juanitorduz.github.io/pymc_mmm/)
-- [A Comprehensive Guide to Bayesian Marketing Mix Modeling](https://1749.io/resource-center/f/a-comprehensive-guide-to-bayesian-marketing-mix-modeling)
+- [A Comprehensive Guide to Bayesian Marketing Mix Modeling](https://1749.io/learn/f/a-comprehensive-guide-to-bayesian-marketing-mix-modeling)
 
 ## Unlock Customer Lifetime Value (CLV) with PyMC