chore: execute goimports to format the code

util/base58/doc.go

@@ -6,7 +6,7 @@
 Package base58 provides an API for working with modified base58 and Base58Check
 encodings.
 
-Modified Base58 Encoding
+# Modified Base58 Encoding
 
 Standard base58 encoding is similar to standard base64 encoding except, as the
 name implies, it uses a 58 character alphabet which results in an alphanumeric
@@ -17,7 +17,7 @@ The modified base58 alphabet used by Bitcoin, and hence this package, omits the
 0, O, I, and l characters that look the same in many fonts and are therefore
 hard to humans to distinguish.
 
-Base58Check Encoding Scheme
+# Base58Check Encoding Scheme
 
 The Base58Check encoding scheme is primarily used for Bitcoin addresses at the
 time of this writing, however it can be used to generically encode arbitrary

util/base58/genalphabet.go

@@ -2,7 +2,8 @@
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
-//+build ignore
+//go:build ignore
+// +build ignore
 
 package main