Updated docstring for off

[maneesht]

Updated documentation to reflect recommended way of removing listeners.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 7a31d7c

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[google-oss-bot]

Size Report ¹

Affected Products

• firebase

  Type	Base (7cad614)	Merge (21d285c)	Diff
  firebase-database.js	606 kB	606 kB	-8 B (-0.0%)

Test Logs

• Base (7cad614): https://github.com/firebase/firebase-js-sdk/actions/runs/2598158982
• Merge (21d285c): https://github.com/firebase/firebase-js-sdk/actions/runs/2599464296

1. https://storage.googleapis.com/firebase-sdk-metric-reports/Yo5jjopjaD.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (7cad614) and merge commit (21d285c).

Test Logs

• Base (7cad614): https://github.com/firebase/firebase-js-sdk/actions/runs/2598158982
• Merge (21d285c): https://github.com/firebase/firebase-js-sdk/actions/runs/2599464296

1. https://storage.googleapis.com/firebase-sdk-metric-reports/MsOuCD6Fil.html