docs: fix hook ecosystem link (open-feature#229)

Signed-off-by: Michael Beemer <[email protected]>

README.md

@@ -130,7 +130,7 @@ bool flagValue = await client.GetBooleanValue("some-flag", false, reqCtx);
 ### Hooks
 
 [Hooks](https://openfeature.dev/docs/reference/concepts/hooks) allow for custom logic to be added at well-defined points of the flag evaluation life-cycle.
-Here is [a complete list of available hooks](https://openfeature.dev/docs/reference/technologies/server/dotnet/).
+Look [here](https://openfeature.dev/ecosystem/?instant_search%5BrefinementList%5D%5Btype%5D%5B0%5D=Hook&instant_search%5BrefinementList%5D%5Bcategory%5D%5B0%5D=Server-side&instant_search%5BrefinementList%5D%5Btechnology%5D%5B0%5D=.NET) for a complete list of available hooks.
 If the hook you're looking for hasn't been created yet, see the [develop a hook](#develop-a-hook) section to learn how to build it yourself.
 
 Once you've added a hook as a dependency, it can be registered at the global, client, or flag invocation level.