[Bexley] Change "missed collections can only be reported..." text

[chrismytton]

For https://3.basecamp.com/4020879/buckets/35109031/todos/7411178677#__recording_7465299420

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.60%. Comparing base (c3ec368) to head (035bad6).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #4984 +/- ## ======================================= Coverage 82.60% 82.60% ======================================= Files 393 393 Lines 30752 30752 Branches 4877 4877 ======================================= + Hits 25402 25403 +1 - Misses 3896 3897 +1 + Partials 1454 1452 -2 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.