update

Change-Id: I213d00c15f7a6486481ef6677612ea11bccfb91b

doc/next/6-stdlib/99-minor/encoding/62384.md

@@ -2,4 +2,4 @@ Two new interfaces, [TextAppender] and [BinaryAppender], have been
 introduced to append the textual or binary representation of an object
 to a byte slice. These interfaces provide the same functionality as
 [TextMarshaler] and [BinaryMarshaler], but instead of allocating a new slice
-each time, they append the data directly to the existing slice
+each time, they append the data directly to an existing slice.

src/encoding/encoding.go

@@ -36,7 +36,7 @@ type BinaryUnmarshaler interface {
 }
 
 // BinaryAppender is the interface implemented by an object
-// that can append the bianry representation of itself.
+// that can append the binary representation of itself.
 // If a type implements both [BinaryAppender] and [BinaryMarshaler],
 // then v.MarshalBinary() must be semantically identical to v.AppendBinary(nil).
 type BinaryAppender interface {