Alt text and Acrolinx fixes

Author: v-dirichards

articles/azure-monitor/essentials/prometheus-workbooks.md

@@ -28,14 +28,14 @@ Azure Monitor workspaces include an exploration workbook to query your Prometheu
 
 1. In the Azure Monitor workspace gallery, select the **Prometheus Explorer** workbook tile.
 
-![Screenshot that shows Azure Monitor workspace gallery](./media/prometheus-workbooks/prometheus-gallery.png)
+![Screenshot that shows Azure Monitor workspace gallery.](./media/prometheus-workbooks/prometheus-gallery.png)
 
 A workbook has the following input options:
 -	**Time Range**. Select the period of time that you want to include in your query. Select **Custom** to set a start and end time.
 -	**PromQL**. Enter the PromQL query to retrieve your data. For more information about PromQL, see [Querying Prometheus](https://prometheus.io/docs/prometheus/latest/querying/basics/#querying-prometheus).
 -	**Graph**, **Grid**, and **Dimensions** tabs. Switch between a graphic, tabular and dimensional view of the query output.
 
-![Screenshot that shows PromQL explorer](./media/prometheus-workbooks/prometheus-explorer.png)
+![Screenshot that shows PromQL explorer.](./media/prometheus-workbooks/prometheus-explorer.png)
 
 ## Create a Prometheus workbook
 
@@ -47,19 +47,19 @@ Workbooks supports many visualizations and Azure integrations. For more informat
 
 1.  Select **New**.
 1.	In the new workbook, select **Add**, and select **Add query** from the dropdown.
-:::image type="content" source="./media/prometheus-workbooks/prometheus-workspace-add-query.png" alt-text="A screenshot showing the add content dropdown in a blank workspace":::    
+:::image type="content" source="./media/prometheus-workbooks/prometheus-workspace-add-query.png" alt-text="A screenshot showing the add content dropdown in a blank workspace.":::    
 1. Azure Workbooks use [data sources](../visualize/workbooks-data-sources.md#prometheus-preview) to set the source scope the data they present. To query Prometheus metrics, select the  **Data source** dropdown, and choose **Prometheus (preview)** .
 1.	From the **Azure Monitor workspace** dropdown, select your workspace.
 1.	Select your query type from **Prometheus query type** dropdown.
 1.	Write your PromQL query in the **Prometheus Query** field. 
 1.	Select **Run Query** button.
 1.	Select the **Done Editing** at the bottom of the section and save your work
 
-![Screenshot that shows sample PromQL query](./media/prometheus-workbooks/prometheus-query.png)
+![Screenshot that shows sample PromQL query.](./media/prometheus-workbooks/prometheus-query.png)
 
 ## Troubleshooting
 
-If you workbook query does not return data:
+If your workbook query does not return data:
 
 -	Check that you have Monitoring Data Reader role permissions assigned through Access Control (IAM) in your Azure Monitor workspace
 -	Verify that you have turned on metrics collection in the Monitored clusters blade of your Azure Monitor workspace.