hash: mention encoding.BinaryAppender in Hash docs

For #62384

Change-Id: I4eeb83a4708544777815eacd6a5b6d293580c5e5
GitHub-Last-Rev: 6fdb6db4811a7b19742fec556fd5a1d5002b4e5e
GitHub-Pull-Request: golang/go#68758
Reviewed-on: https://go-review.googlesource.com/c/go/+/603405
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

diff --git a/src/hash/hash.go b/src/hash/hash.go
index 82c81034ffcb515885edb83f910d72427a45d4d7..08a0c6764c3dda8a9cc69ae0ce723112410f07be 100644 (file)
--- a/src/hash/hash.go
+++ b/src/hash/hash.go
@@ -10,8 +10,8 @@ import "io"
 // Hash is the common interface implemented by all hash functions.
 //
 // Hash implementations in the standard library (e.g. [hash/crc32] and
-// [crypto/sha256]) implement the [encoding.BinaryMarshaler] and
-// [encoding.BinaryUnmarshaler] interfaces. Marshaling a hash implementation
+// [crypto/sha256]) implement the [encoding.BinaryMarshaler], [encoding.BinaryAppender]
+// and [encoding.BinaryUnmarshaler] interfaces. Marshaling a hash implementation
 // allows its internal state to be saved and used for additional processing
 // later, without having to re-write the data previously written to the hash.
 // The hash state may contain portions of the input in its original form,