docs: fix for links (backport #18816) (#18819)

Co-authored-by: samricotta <[email protected]>
Co-authored-by: Julien Robert <[email protected]>

docs/docs/learn.md

@@ -3,9 +3,9 @@ sidebar_position: 0
 ---
 # Learn
 
-*   [Introduction](intro/00-overview.md) -  Dive into the fundamentals of Cosmos SDK with an insightful introduction,
+*   [Introduction](./intro/00-overview.md) -  Dive into the fundamentals of Cosmos SDK with an insightful introduction,
 laying the groundwork for understanding blockchain development. In this section we provide a High-Level Overview of the SDK, then dive deeper into Core concepts such as Application-Specific Blockchains, Blockchain Architecture, and finally we begin to explore what are the main components of the SDK.
-*   [Beginner](beginner/00-app-anatomy.md) - Start your journey with beginner-friendly resources in the Cosmos SDK's "Learn"
+*   [Beginner](./beginner/00-app-anatomy.md) - Start your journey with beginner-friendly resources in the Cosmos SDK's "Learn"
 section, providing a gentle entry point for newcomers to blockchain development. Here we focus on a little more detail, covering the Anatomy of a Cosmos SDK Application, Transaction Lifecycles, Accounts and lastly, Gas and Fees.
-*   [Advanced](advanced/00-baseapp.md) - Level up your Cosmos SDK expertise with advanced topics, tailored for experienced
+*   [Advanced](./advanced/00-baseapp.md) - Level up your Cosmos SDK expertise with advanced topics, tailored for experienced
 developers diving into intricate blockchain application development. We cover the Cosmos SDK on a lower level as we dive into the core of the SDK with BaseApp, Transactions, Context, Node Client (Daemon), Store, Encoding, gRPC, REST, and CometBFT Endpoints, CLI, Events, Telementry, Object-Capability Model, RunTx recovery middleware, Cosmos Blockchain Simulator, Protobuf Documentation, In-Place Store Migrations, Configuration and AutoCLI.