[WIP] Update image or add steps for Power BI reports

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>08-design-power-bi-reports.md Non-breaking Wrong image or step</issue_title>
<issue_description>#### Priority
not breaking

Lab/Demo Number/Name

08-design-power-bi-reports.md Task: Design page 2 Step: 7

Describe the bug

Either the screen capture needs to be updated or more steps added.

Screenshots

Current screen capture:

Actual step result: (includes "Sum of" in two columns)

To Reproduce

Expected behavior/Suggested Change

Either update the screen capture to show "Sum of" in the column headings or add two steps to rename the column headings.

Rename column headings:

1. right-click the "Sum of Sales" in the Values well.
2. Click "Rename for this visual" and remove "Sum of".
3. Repeat for "Sum of Cost".

Additional context

Add any other context about the problem here.

Note: To share feedback for the slides, please use the MCT Courseware Forum.
</issue_description>

<agent_instructions>take the provided screenshot - the second one after the "actual step result" line in this issue and update the </agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes 08-design-power-bi-reports.md Non-breaking Wrong image or step #299

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