Update peering-with-content-providers.md

[dome]

Add 8api.sh peers

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[johnnymatthews]

I also get responses from both peers:

$ › ipfs ping 12D3KooWGASC2jm3pmohEJXUhuStkxDitPgzvs4qMuFPaiD9x1BA                                                 ~
Looking up peer 12D3KooWGASC2jm3pmohEJXUhuStkxDitPgzvs4qMuFPaiD9x1BA
PING 12D3KooWGASC2jm3pmohEJXUhuStkxDitPgzvs4qMuFPaiD9x1BA.
Pong received: time=112.23 ms
Pong received: time=112.12 ms
Pong received: time=111.36 ms
Average latency: 111.90ms

$ › ipfs ping 12D3KooWRbWZN3GvLf9CHmozq4vnTzDD4EEoiqtRJxg5FV6Gfjmm                                                 ~
Looking up peer 12D3KooWRbWZN3GvLf9CHmozq4vnTzDD4EEoiqtRJxg5FV6Gfjmm
PING 12D3KooWRbWZN3GvLf9CHmozq4vnTzDD4EEoiqtRJxg5FV6Gfjmm.
Pong received: time=131.11 ms
Pong received: time=129.09 ms
Pong received: time=129.70 ms
Average latency: 129.97ms

[TMoMoreau]

8api.sh isn't known to us, are you affiliated with the IPFS team in any way?