all: fix invalid directive syntax for golangci-lint nolint

[wit765]

Fix invalid directive syntax for golangci-lint nolint

Invalid syntax:

// nolint
// nolint:xxx
//nolint :xxx
//nolint: xxx

Valid syntax:

//nolint:xxx

[rjl493456442]

golangci-lint does say this syntax is invalid, https://golangci-lint.run/docs/linters/false-positives/#syntax

but i am curious why it's effective? This function is not used but linter doesn't report it.