Leaflet: wms examples page not work

[gdbd]

Steps to reproduce
Steps to reproduce the behavior:

• open examples page https://leafletjs.com/examples/wms/wms.html

Expected behavior
demos display wms layers on the map

Current behavior
demos does not display wms layers on the map

Environment

• Leaflet version: 1.5
• Browser (with version): chrome 78, firefox 70
• OS/Platform (with version): manjaro

Additional context
seems that used wms services are down

Minimal example reproducing the issue
https://leafletjs.com/examples/wms/wms.html

[IvanSanchez]

If you can provide the address of a publicly-available WMS server, then we can update the tutorial to use that one.

[gdbd]

@IvanSanchez sorry i dont know any available wms server
i am created issue just for note for note that example page not work

[mahadevans87]

Hi,
I found a free set of WMS sources here - https://mrdata.usgs.gov/wms.html
Can I go ahead and update the docs and submit a PR?