Update content providers page (#1546) (#1561)

Author: ElPaisano

docs/how-to/peering-with-content-providers.md

@@ -57,6 +57,12 @@ To have your platform added to this list, please [open a PR to edit this page](h
 | `Qmcfuo1TM9uUiJp6dTbm915Rf1aTqm3a3dnmCdDQLHgvL5` | `/dnsaddr/node-11.ingress.cloudflare-ipfs.com` |
 | `QmcfV2sg9zaq7UUHVCGuSvT2M2rnLBAPsiE79vVyK3Cuev` | `/dnsaddr/node-12.ingress.cloudflare-ipfs.com` |
 
+### European EPC Competence Center
+
+| Peer ID | Addresses |
+| ------- | --------- |
+|`12D3KooWGaHbxpDWn4JVYud899Wcpa4iHPa3AMYydfxQDb3MhDME`|`/dnsaddr/ipfs.ssi.eecc.de`|
+
 ### Estuary
 
 | Peer ID | Addresses |