app/core/components/TraceToLogsSettings: fix spelling error (#44399)
app/core/components/TraceToLogsSettings: fix spelling error (#44399)

"Let's" is an abbreviation of "let us", which is not the right use in
this sentence on the settings page.
grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana