* Update streamlabswater.markdown
I didn't know about the API costs when I purchased the device, so this warning may help others make a more informed decision if they want to buy this product based on it's HA integration like I did.
* Moved warning from description to a note box
Wasn't sure if a note box, or a warning box was appropriate, so just used a normal note box. I also added a link to their subscription page instead of specifically listing the prices. That way if the prices change the docs don't need updated.
* Update streamlabswater.markdown
Fixed broken URL from previous edit
* ✏️ Tweak
Co-authored-by: Franck Nijhof <frenck@frenck.nl>
