chore(*): fix spelling of Intel Corporation

revive in golangci-lint has version v1.56.2 complains about unused named
parameters. Sometimes names are useful to document the purpose of a
parameter. Comments are used instead now in those cases.

build: fix some linter warnings

The newer golangci-lint enables a revive check by default:

  output_test/output_test.go:115:42: unused-parameter: parameter 'vmodule' seems to be unused, consider removing or renaming it as _ (revive)
	newLogger := func(out io.Writer, v int, vmodule string) logr.Logger {

examples: fix linter warning

Do not acquire lock for file.Sync() fsync call

Not terminating immediately is fairly normal: many controllers
log "terminating" messages while they shut down, which often is
right after test completion, if that is when the test cancels the
context and then doesn't wait for goroutines (which is often
not possible).

Therefore the warning now only gets printed if that happens after more than 10
seconds since test completion, and then the warning is only printed as an info
message, not an error.

ktesting: tone down warning about leaked test goroutine