[#643] Fix linter issues

Signed-off-by: Angira Kekteeva <kira@nspcc.ru>

api/auth/signer/v4/v4.go

@@ -3,7 +3,7 @@
 // Provides request signing for request that need to be signed with
 // AWS V4 Signatures.
 //
-// Standalone Signer
+// # Standalone Signer
 //
 // Generally using the signer outside of the SDK should not require any additional
 // logic when using Go v1.5 or higher. The signer does this by taking advantage
@@ -14,10 +14,10 @@
 // The signer will first check the URL.Opaque field, and use its value if set.
 // The signer does require the URL.Opaque field to be set in the form of:
 //
-//     "//<hostname>/<path>"
+//	"//<hostname>/<path>"
 //
-//     // e.g.
-//     "//example.com/some/path"
+//	// e.g.
+//	"//example.com/some/path"
 //
 // The leading "//" and hostname are required or the URL.Opaque escaping will
 // not work correctly.

cmd/s3-gw/main.go

@@ -15,9 +15,9 @@ import (
 // Panics on failure.
 //
 // Logger is built from zap's production logging configuration with:
-//  * parameterized level (debug by default)
-//  * console encoding
-//  * ISO8601 time encoding
+//   - parameterized level (debug by default)
+//   - console encoding
+//   - ISO8601 time encoding
 //
 // Logger records a stack trace for all messages at or above fatal level.
 //