fix link (#1465)

* fix link

* update link

academy/3-ibc/8-ica.md

@@ -300,7 +300,7 @@ As an example, consider a remote-controlled atomic swap:
 
 <HighlightBox type="best-practice">
 
-The request from the community to enable a standard for this type of flow resulted in [ADR-008](https://github.com/cosmos/ibc-go/blob/main/docs/architecture/adr-008-app-caller-cbs/adr-008-app-caller-cbs.md), which extends the ability for general use cases.
+The request from the community to enable a standard for this type of flow resulted in [ADR-008](https://github.com/cosmos/ibc-go/blob/main/docs/architecture/adr-008-app-caller-cbs.md), which extends the ability for general use cases.
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 It is advisable to follow developments around ADR-008 and the so-called _callback interface for IBC actors_, i.e. secondary applications (like smart contracts for example) that want to call into IBC apps as part of their state machine logic.
 

hands-on-exercise/5-ibc-adv/3-ibc-app-intro.md

@@ -18,7 +18,7 @@ In the following sections, you will learn how to develop your custom IBC applica
 
 <HighlightBox type="docs">
 
-In the [integration](https://ibc.cosmos.network/v3.0.0/ibc/integration.html) section of the IBC documentation, the necessary steps to integrate IBC in a Cosmos SDK chain are outlined.
+In the [integration](https://ibc.cosmos.network/v4.4.x/ibc/integration.html) section of the IBC documentation, the necessary steps to integrate IBC in a Cosmos SDK chain are outlined.
 <br/><br/>
 Note that this does not mean that the main application modules turn into IBC modules, it only means IBC is enabled for the chain. The IBC module has come out-of-the-box in Cosmos SDK chains since the 0.40.x version of the SDK, so it is unlikely you will have to implement these steps manually when developing a chain.
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