Fixes: Add a badge from the green web foundation to the carbon footprint page

data/pages/carbon_footprint.md

@@ -31,4 +31,6 @@ In addition to the above solutions, it’s helpful to classify emissions that ar
 something wasteful, like repeatedly building packages and then discarding the results, these tasks create nonessential emissions, which should be modified if not completely discontinued. Unnecessary emissions can be eliminated by unifying and normalising data schema for various services,
 adding caches to avoid repeated computations, and ensuring effective HTTP cache control headers for immutable content, which will reduce server load.
 
-Another way to address OCaml’s carbon footprint is to choose “green” data centres with their own progressive carbon neutrality policy, assemble data and ensure the power usage is as healthy as possible, and renewable energy is used whenever possible.
+Another way to address OCaml’s carbon footprint is to choose “green” data centres with their own progressive carbon neutrality policy, assemble data and ensure the power usage is as healthy as possible, and renewable energy is used whenever possible.
+
+![image info](../media/pages/green-web-foundation-badge.png)