Fix some markdown links

cardano-node/ChangeLog.md

@@ -273,7 +273,7 @@ None
 - Remove ledger-based validation of `Datum`. This is now done entirely by Plutus
   on deserialisation. (#2757)
 - Add documentation on all ledger events. This can be found at
-  https://github.com/input-output-hk/cardano-ledger/blob/master/docs/LedgerEvents.md(#2778)
+  https://github.com/input-output-hk/cardano-ledger/blob/master/docs/LedgerEvents.md (#2778)
 - In the Alonzo era, extend the epoch info provided by Plutus to allow time
   translation arbitrarily into the future. This pertains to a bug in consensus
   which was allowing arbitrarily distant translation only in the last era. This

cardano-tracer/docs/cardano-tracer.md

@@ -40,7 +40,7 @@ Please note that `cardano-tracer` can work as an aggregator as well: _one_ `card
 
 # Build and run
 
-Please make sure you have [Nix installed](https://nixos.org/guides/install-nix.html).
+Please make sure you have [Nix installed](https://nixos.org/download.html#download-nix).
 
 First of all, go to Nix shell using the following command (from the root of `cardano-node` repository):
 

doc/reference/byron-genesis.md

@@ -146,8 +146,8 @@ The key `protocolMagic` defines the protocol magic number. When the protocol mag
 The `protocolMagic` value can either be an object with the two fields described above, or just a plain integer. In the latter case, `requiresNetworkMagic` will take the default value of `RequiresMagic`.
 
 Relevant:
-- [cardano-ledger - Genesis test](https://github.com/input-output-hk/cardano-ledger/blob/master/cardano-ledger/test/Test/Cardano/Chain/Genesis/Json.hs#L69)
-- [cardano-ledger - ProtocolMagic](https://github.com/input-output-hk/cardano-ledger/blob/master/crypto/src/Cardano/Crypto/ProtocolMagic.hs)
+- [cardano-ledger - Genesis test](https://github.com/input-output-hk/cardano-ledger/blob/master/eras/byron/ledger/impl/test/Test/Cardano/Chain/Genesis/Json.hs#L69)
+- [cardano-ledger - ProtocolMagic](https://github.com/input-output-hk/cardano-ledger/blob/master/eras/byron/crypto/src/Cardano/Crypto/ProtocolMagic.hs)
 
 ## heavyDelegation
 The key `heavyDelegation` contains an information about heavyweight delegation:

doc/reference/plutus/plutus-minting-script-example.md

@@ -12,7 +12,7 @@ process involving:
 + the creation of the `AlwaysSucceeds` Plutus minting script (i.e. anybody can mint)
 + the creation of a transaction that mints multi-assets using the `AlwaysSucceeds` Plutus minting script
 
-In this example we will use the [anyone can mint](../../../plutus-example/plutus-example/src/Cardano/PlutusExample/MintingScript.hs) Plutus minting script. To execute it, we require the following:
+In this example we will use the [anyone can mint](https://github.com/input-output-hk/plutus-apps/blob/main/plutus-example/src/PlutusExample/PlutusVersion1/MintingScript.hs) Plutus minting script. To execute it, we require the following:
 
 - Collateral tx input(s) that are provided and forfeited if the Plutus script fails to execute.
 - Serialization of the Plutus script in the text envelope format (required for cardano-cli).

doc/reference/plutus/plutus-spending-script-example.md

@@ -17,7 +17,7 @@ process involving:
 + sending ADA to the Plutus script address
 + spending ADA at the Plutus script address
 
-In this example we will use the [AlwaysSucceeds](../../../plutus-example/plutus-example/src/Cardano/PlutusExample/AlwaysSucceeds.hs) Plutus spending script. In order to execute a Plutus spending script, we require the following:
+In this example we will use the [AlwaysSucceeds](https://github.com/input-output-hk/plutus-apps/blob/main/plutus-example/src/PlutusExample/PlutusVersion1/AlwaysSucceeds.hs) Plutus spending script. In order to execute a Plutus spending script, we require the following:
 
 - Collateral tx input(s) - these are provided and are forfeited in the event the Plutus script fails to execute.
 - A Plutus tx output with accompanying datum hash. This is the tx output that sits at the Plutus script address. It must have a datum hash, otherwise, it is unspendable.

trace-forward/README.md

@@ -1,6 +1,6 @@
 # trace-forward
 
-This library specifies two protocols allowing to forward different information from the node to external applications (for example, `cardano-tracer` or `cardano-wallet`). These protocols are built upon [`typed-protocols`](https://github.com/input-output-hk/ouroboros-network/tree/master/typed-protocols).
+This library specifies two protocols allowing to forward different information from the node to external applications (for example, `cardano-tracer` or `cardano-wallet`). These protocols are built upon [`typed-protocols`](https://github.com/input-output-hk/typed-protocols).
 
 The first one allows forwarding `TraceObject`s from the node to external applications. You can think of `TraceObject` as a log item, which will be saved in log files.