fix: lint errors

[arnested]

golangci-lint detected a few issues:

format_test.go:53:9: indent-error-flow: if block ends with a return statement, so drop this else and outdent its block (move short variable declaration to its own line if necessary) (revive)
	} else {
		golddata, _ := os.ReadFile(fmt.Sprintf("./testdata/%s", pkg.Name))

		if diff := cmp.Diff(string(golddata), testdata); diff != "" {
			t.Errorf("FormatChangelog mismatch (+got -want):\n%s", diff)
		}
	}
order_test.go:16:2: dot-imports: should not use dot imports (revive)
	. "github.com/smartystreets/goconvey/convey"
	^

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c28f513) 65.18% compared to head (f196d6b) 65.18%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #159   +/-   ##
=======================================
  Coverage   65.18%   65.18%           
=======================================
  Files           7        7           
  Lines         247      247           
=======================================
  Hits          161      161           
  Misses         64       64           
  Partials       22       22           

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