fix: border color on popup examples

[jjagielka]

📑 Description

Border color on External reference examples for Tooltip and Popover.

Status

• Not Completed
• Completed

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• I have checked the page with https://validator.unl.edu/
• All the tests have passed
• My pull request is based on the latest commit (not the npm version).

ℹ Additional Information

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Name	Status	Preview	Comments	Updated (UTC)
flowbite-svelte	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 5, 2023 7:16pm
flowbite-svelte-update	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 5, 2023 7:16pm