Update sitemaps.md

[m0rgano]

Show an example of displaying an image from an IP camera.

[netlify]

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[ThomDietrich]

Hey @m0rgano,
your intention is to show the use of refresh? Good idea but this is not so clear from the example. I'd leave out the comment for simplicity but add "e.g. for webcam images" to the refresh description. For testing reasons I suggest to use a publicly available webcam link :) there are many for famous public places or even from the ISS. Not sure how to include them though. Maybe you can quickly try.

These are just suggestions, I don't want to hold back the PR. Let us know how you feel about my requests. Best!

[ghys]

Note: changed the base branch to 2.5.x which is the default for now, and will appear on the production website.
master is now the branch for openHAB 3.x docs.

@openhab/documentation-maintainers
Once this is merged to 2.5.x please remember to merge (for example, cherry-pick the commit) this to master as well if appropriate.
See #1133 for details.

[Confectrician]

I am with @ThomDietrich here.
If refresh is the usecase here, we should promote this better.

Fullfiled the request