docs: add missing upgrade guides (#4240)

Add guides for the last few releases.

Author: achingbrain

docs/upgrading/v0.62-v0.63.md

@@ -1,12 +1,12 @@
 <!--Specify versions for migration below-->
 # Migrating to [email protected] and [email protected] <!-- omit in toc -->
 
-> A migration guide for refactoring your application code from `ipfs@0.63.x` to `ipfs@0.64.x`
+> A migration guide for refactoring your application code from `ipfs@0.62.x` to `ipfs@0.63.x`
 
 ## Table of Contents <!-- omit in toc -->
 
 - [ESM](#esm)
-- [[email protected]](#libp2p037x)
+- [`[email protected]`](#libp2p037x)
 - [PeerIds](#peerids)
 - [multiaddrs](#multiaddrs)
 

docs/upgrading/v0.63-v0.64.md

@@ -0,0 +1,16 @@
+<!--Specify versions for migration below-->
+# Migrating to [email protected] and [email protected] <!-- omit in toc -->
+
+> A migration guide for refactoring your application code from `[email protected]` to `[email protected]`
+
+## Table of Contents <!-- omit in toc -->
+
+- [libp2p](#libp2p)
+
+## libp2p
+
+The upgrade to `[email protected]` incorporates an update to `[email protected]` but no API changes.
+
+If your application uses only the default libp2p config there is nothing to do.
+
+If you supply a custom `libp2p` instance to the `ipfs` factory function you should consult the [`[email protected]` upgrade guide](https://github.com/libp2p/js-libp2p/blob/master/doc/migrations/v0.37-v0.38.md) for any changes you need to make.

docs/upgrading/v0.64-v0.65.md

@@ -0,0 +1,23 @@
+<!--Specify versions for migration below-->
+# Migrating to [email protected] and [email protected] <!-- omit in toc -->
+
+> A migration guide for refactoring your application code from `[email protected]` to `[email protected]`
+
+## Table of Contents <!-- omit in toc -->
+
+- [libp2p](#libp2p)
+- [multiformats](#multiformats)
+
+## libp2p
+
+The upgrade to `[email protected]` incorporates an update to `[email protected]` but no API changes.
+
+If your application uses only the default libp2p config there is nothing to do.
+
+If you supply a custom `libp2p` instance to the `ipfs` factory function you should consult the [`[email protected]` upgrade guide](https://github.com/libp2p/js-libp2p/blob/master/doc/migrations/v0.39-v0.40.md) for any changes you need to make.
+
+## multiformats
+
+`[email protected]` now uses `[email protected]`, this means instances of the `CID` class now come from that module and not `[email protected]` so any `instanceof` checks your codebase has may break if instances are compare to the class loaded from a different module version.
+
+If your project also has a dependency on the `multiformats` module, it should be updated to `10.x.x` in line with js-ipfs.