all: gofmt

Gofmt to update doc comments to the new formatting.

For golang/go#51082.

Change-Id: I554ad01aa12e84301e44e15c3dc04f82c7244efb
Reviewed-on: https://go-review.googlesource.com/c/xerrors/+/399609
Run-TryBot: Russ Cox <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>

Author: rsc

doc.go

@@ -5,7 +5,8 @@
 // Package xerrors implements functions to manipulate errors.
 //
 // This package is based on the Go 2 proposal for error values:
-//   https://golang.org/design/29934-error-values
+//
+//	https://golang.org/design/29934-error-values
 //
 // These functions were incorporated into the standard library's errors package
 // in Go 1.13:

wrap_113_test.go

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//+build go1.13
+//go:build go1.13
+// +build go1.13
 
 package xerrors_test