Add Spectrum to the RPC providers list (#1652)

* Add Spectrum to the RPC providers list

* codereview

---------

Co-authored-by: Raz Landau <[email protected]>

Author: odednaor

components/Starknet/modules/ecosystem/pages/fullnodes-rpc-providers.adoc

@@ -89,6 +89,10 @@ For complete information on the Starknet JSON-RPC API, see https://github.com/st
 | https://www.quicknode.com/chains/strk[quicknode.com/chains/strk^]
 | https://www.quicknode.com/docs/starknet#supporting-multiple-versions[quicknode.com/docs/starknet^]
 
+| Spectrum
+| https://spectrumnodes.com/[spectrumnodes.com^]
+| N/A
+
 | Zan
 | https://zan.top/home/node-service[zan.top/home/node-service^]
 | Use the `/rpc/vX_Y` suffix, as described in https://github.com/eqlabs/pathfinder?tab=readme-ov-file#json-rpc-api[Pathfinder's README^]