style: beautified comment formatting

Author: Luca Bianconi

arduino/security/signatures.go

@@ -65,7 +65,7 @@ func VerifyDetachedSignature(targetPath *paths.Path, signaturePath *paths.Path,
 // signaturePath file) matches the given targetPath file and is an authentic
 // signature. This function allows to pass an io.Reader to read the custom key.
 //
-//	If any of the above conditions fails this function returns false.
+// If any of the above conditions fails this function returns false.
 //
 // The PGP entity in the trusted keychain that produced the signature is returned too.
 func VerifySignature(targetPath *paths.Path, signaturePath *paths.Path, arduinoKeyringFile io.Reader) (bool, *openpgp.Entity, error) {