remove all references to the go-da repo

Author: pthmas

blog/rollkit-the-first-sovereign-rollup-framework.md

@@ -57,7 +57,7 @@ Rollkit rollups interact with a state machine via the Application Blockchain Int
 
 Rollkit allows developers to optimize between the different modular components  of a sovereign chain as needed. Rollkit allows you to:
 
-- Choose between data availability layers that implement the [go-da interface](https://github.com/rollkit/go-da).
+- Choose between data availability layers that implement the [DA interface](https://github.com/rollkit/rollkit/blob/main/core/da/da.go#L11).
 
 - Choose any ABCI++ compatible virtual machine.
 - Utilize the Sequencing API to delegate sequencing to the shared sequencer network of your choice or even delegate sequencing to the DA layer to go [based](https://ethresear.ch/t/based-rollups-superpowers-from-l1-sequencing/15016).

learn/stack.md

@@ -38,7 +38,7 @@ the methods needed for state fraud proofs.
 
 ### Data availability
 
-[Data availability (DA)](https://github.com/rollkit/rollkit/tree/main/da) can be accessed using generic [interfaces](https://github.com/rollkit/rollkit/blob/main/da/da.go). This design allows for seamless integration with any DA layer. New implementations can be plugged in programmatically, without a need to fork Rollkit.
+[Data availability (DA)](https://github.com/rollkit/rollkit/tree/main/da) can be accessed using generic [interfaces](https://github.com/rollkit/rollkit/blob/main/core/da/da.go#L11). This design allows for seamless integration with any DA layer. New implementations can be plugged in programmatically, without a need to fork Rollkit.
 
 The `DataAvailabilityLayerClient` interface includes essential lifecycle methods (`Init`, `Start`, `Stop`) as well as data availability methods (`SubmitBlocks`, `RetrieveBlocks`).
 
@@ -52,7 +52,7 @@ It's using the [Celestia Node API](https://node-rpc-docs.celestia.org)
 via the [`rollkit/celestia-da`](https://github.com/rollkit/celestia-da) package.
 To deploy a Rollkit rollup on Celestia you also have to [run a Celestia light node](https://docs.celestia.org/developers/node-tutorial/).
 
-New DA layer integrations can be added by using the [go-da](https://github.com/rollkit/go-da) interface.
+New DA layer integrations can be added by using the [DA interface](https://github.com/rollkit/rollkit/blob/main/core/da/da.go#L11).
 
 ## Node components