add link to install Deno

Author: zendive

README.md

@@ -50,7 +50,7 @@ If you're web developer and want to assess implementation correctness - this too
 
 - OS: Linux
 - Node: 22.12.0 (LTS)
-- Deno: 2.2.8
+- [Deno](https://docs.deno.com/runtime/getting_started/installation/) 2.2.8
 
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