Update _dashboards/visualize/tsvb.md

Signed-off-by: Melissa Vagi <[email protected]>

_dashboards/visualize/tsvb.md

@@ -63,7 +63,7 @@ Annotations are markers that can be added to time-series visualizations. Follow
 2. Select the **Annotations** tab and then **Add data source**.
 3. In the **Index** name field, specify the appropriate index. In this case, continue using the same index from the previous steps, that is, `opensearch_dashboards_sample_data_logs`.
 4. From **Time** field, select **@timestamp**.
-5. In **Fields**, enter timestamp.
+5. In the **Fields** field, enter timestamp.
 6. In the **Row template** field, enter timestamp.
 
 The visualization automatically updates to display your annotations, as shown in the following image.