Add a Caption To an Existing Slide

## Can you think of a better caption?
Each slide can have more than one caption. Check out the current slide show and add a caption (or two).
If you need help, check out the Appendix in the training manual.

Review the current slide show to identify an existing slide and the place where its captions are defined. Use the Appendix in the training manual for guidance, then add one or two captions and confirm they appear correctly in the slide show.

由索引模型根據 Issue 內容生成。