Update docs/learn/advanced/05-encoding.md

Co-authored-by: Hieu Vu <72878483+hieuvubk@users.noreply.github.com>

docs/learn/advanced/05-encoding.md

@@ -47,7 +47,7 @@ via Protobuf. This means that modules may use Protobuf encoding, but the types m
 implement `ProtoMarshaler`. If modules wish to avoid implementing this interface
 for their types, this is autogenerated via [buf](https://buf.build/)
 
-Modules are recommended to use [collections](../../build/pacakges/02-collections.md) for handling encoding and decoding of state. Usage of collections handles marshal and unmarshal for you. By default protobuf is used but other encodings can be used if preferred. 
+Modules are recommended to use [collections](../../build/packages/02-collections.md) for handling encoding and decoding of state. Usage of collections handles marshal and unmarshal for you. By default protobuf is used but other encodings can be used if preferred. 
 
 ### Gogoproto