doc/go1.5.txt: fmt fix for empty byte slice

Change-Id: I392cedc49847c8ea0daa38024fca97a289d805af
Reviewed-on: https://go-review.googlesource.com/8890Reviewed-by: Rob Pike <r@golang.org>

doc/go1.5.txt

@@ -27,7 +27,8 @@ crypto/tls: change default minimum version to TLS 1.0. (https://golang.org/cl/17
 crypto/x509: wildcards are now only accepted as the first label (https://golang.org/cl/5691)
 database/sql: add Stats (https://golang.org/cl/7950)
 encoding/base64: add unpadded encodings (https://golang.org/cl/1511)
-flag: new nicer format for PrintDefaults (https://go-review.googlesource.com/7330)
+flag: new nicer format for PrintDefaults (https://golang.org/cl/7330)
+fmt: empty slices now print nothing with %x (bug fix) (https://golang.org/cl/8864)
 go/ast: add Implicit field to ast.EmptyStmt; changed meaning of ast.EmptyStmt.Semicolon position (https://golang.org/cl/5720)
 log: add SetOutput functions (https://golang.org/cl/2686, https://golang.org/cl/3023)
 log: add LUTC flag (https://golang.org/cl/8761)