docs: fix links to adr 56 (#5464)

## Description

fix broken link from a previous change

docs/architecture/README.md

@@ -76,6 +76,6 @@ Note the context/background should be written in the present tense.
 - [ADR-053-State-Sync-Prototype](./adr-053-state-sync-prototype.md)
 - [ADR-054-crypto-encoding-2](./adr-054-crypto-encoding-2.md)
 - [ADR-055-protobuf-design](./adr-055-protobuf-design.md)
-- [ADR-056-proving-amnesia-attacks](./adr-056-proving-amnesia-attacks.md)
+- [ADR-056-light-client-amnesia-attacks](./adr-056-light-client-amnesia-attacks)
 - [ADR-057-RPC](./adr-057-RPC.md)
 - [ADR-058-event-hashing](./adr-058-event-hashing.md)

docs/architecture/adr-047-handling-evidence-from-light-client.md

@@ -205,7 +205,7 @@ clear from the current information which nodes behaved maliciously.
 ## References
 
 * [Fork accountability spec](https://github.com/tendermint/spec/blob/master/spec/consensus/light-client/accountability.md)
-* [ADR 056: Proving amnesia attacks](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-056-proving-amnesia-attacks.md)
+* [ADR 056: Light client amnesia attacks](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-056-light-client-amnesia-attacks.md)
 * [ADR-059: Evidence Composition and Lifecycle](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-059-evidence-composition-and-lifecycle.md)
 * [Informal's Light Client Detector](https://github.com/informalsystems/tendermint-rs/blob/master/docs/spec/lightclient/detection/detection.md)