Fix link (#10931)

Author: daniloc

contents/docs/new-to-posthog/activation.mdx

@@ -68,7 +68,7 @@ Once your funnel is created, add it to your project's [dashboard](/docs/product-
 
 ### Advanced activation tracking
 
-- A more complex activation sequence – where the intermediate steps could be one of many events – may need a custom query. This post [on how we found our activation metric](product-engineers/activation-metrics) walks through the thinking and queries behind this approach.
+- A more complex activation sequence – where the intermediate steps could be one of many events – may need a custom query. This post [on how we found our activation metric](/product-engineers/activation-metrics) walks through the thinking and queries behind this approach.
 
 - Our [newsletter on activation metrics](/newsletter/wtf-is-activation) goes deeper into why you should care about activation, and the different factors you should consider when choosing your activation metric.