Update changelog

CHANGELOG.md

@@ -15,18 +15,18 @@ The following emojis are used to highlight certain changes:
 ## [Unreleased]
 
 - `bitswap`, `routing`, `exchange` ([#641](https://github.com/ipfs/boxo/pull/641)):
-  * ✨ Bitswap is no longer in charge of providing blocks to the newtork: providing functionality is now handled by a `exchange/providing.Exchange`, meant to be used with `provider.System` so that all provides follow the same rules (multiple parts of the code where handling provides) before.
-  * 🛠 `bitswap/client/internal/providerquerymanager` has been moved to `routing/providerquerymanager` where it belongs. In order to keep compatibility, Bitswap now receives a `routing.ContentDiscovery` parameter which implements `FindProvidersAsync(...)` and uses it to create a `providerquerymanager` with the default settings as before. Custom settings can be used by using a custom `providerquerymanager` to manually wrap a `ContentDiscovery` object and pass that in as `ContentDiscovery` on initialization while setting `bitswap.WithDefaultProviderQueryManager(false)` (to avoid re-wrapping it again).
-  * The renovated `providedQueryManager` will trigger lookups until it manages to connect to `MaxProviders`. Before it would lookup at most `MaxInProcessRequests*MaxProviders` and connection failures may have limited the actual number of providers found.
-  * 🛠 We have aligned our routing-related interfaces with the libp2p [`routing`](https://pkg.go.dev/github.com/libp2p/go-libp2p/core/routing#ContentRouting) ones, including in the `reprovider.System`.
-  * In order to obtain exactly the same behaviour as before (i.e. particularly ensuring that new blocks are still provided), what was done like:
+  - ✨ Bitswap is no longer in charge of providing blocks to the newtork: providing functionality is now handled by a `exchange/providing.Exchange`, meant to be used with `provider.System` so that all provides follow the same rules (multiple parts of the code where handling provides) before.
+  - 🛠 `bitswap/client/internal/providerquerymanager` has been moved to `routing/providerquerymanager` where it belongs. In order to keep compatibility, Bitswap now receives a `routing.ContentDiscovery` parameter which implements `FindProvidersAsync(...)` and uses it to create a `providerquerymanager` with the default settings as before. Custom settings can be used by using a custom `providerquerymanager` to manually wrap a `ContentDiscovery` object and pass that in as `ContentDiscovery` on initialization while setting `bitswap.WithDefaultProviderQueryManager(false)` (to avoid re-wrapping it again).
+  - The renovated `providedQueryManager` will trigger lookups until it manages to connect to `MaxProviders`. Before it would lookup at most `MaxInProcessRequests*MaxProviders` and connection failures may have limited the actual number of providers found.
+  - 🛠 We have aligned our routing-related interfaces with the libp2p [`routing`](https://pkg.go.dev/github.com/libp2p/go-libp2p/core/routing#ContentRouting) ones, including in the `reprovider.System`.
+  - In order to obtain exactly the same behaviour as before (i.e. particularly ensuring that new blocks are still provided), what was done like:
 
 ```go
 	bswapnet := network.NewFromIpfsHost(host, contentRouter)
 	bswap := bitswap.New(p.ctx, bswapnet, blockstore)
 	bserv = blockservice.New(blockstore, bswap)
 ```
-	needs to be done like:
+  - becomes:
 
 ```go
 	// Create network: no contentRouter anymore
@@ -42,10 +42,23 @@ The following emojis are used to highlight certain changes:
 	// A wrapped providing exchange using the previous exchange and the provider.
 	exch := providing.New(bswap, provider)
 
-	// Use exch instead from now on.
+	// Finally the blockservice
+	bserv := blockservice.New(blockstore, exch)
 	...
 ```
 
+  - The above is only necessary if content routing is needed. Otherwise:
+
+```
+	// Create network: no contentRouter anymore
+	bswapnet := network.NewFromIpfsHost(host)
+	// Create Bitswap: a new "discovery" parameter set to nil (disable content discovery)
+	bswap := bitswap.New(p.ctx, bswapnet, nil, blockstore)
+	// Finally the blockservice
+	bserv := blockservice.New(blockstore, exch)
+```
+
+
 
 ### Added