[FEATURE] Give the rpc url usage example in documentation for API

[ChiHaoLu]

Is your feature request related to a problem? Please describe.
I am confused how to directly use the API to call the Bundler.

I use the public API Key which is mentioned in sdk. And the RPC call is always failed but I don't know how to use the API with the key.

curl --request POST \
  --url https://testnet-rpc.etherspot.io/v2/11155111?api-key=eyJvcmciOiI2NTIzZjY5MzUwOTBmNzAwMDFiYjJkZWIiLCJpZCI6ImVhMzc3MTNlZDhmYjQ4MWU4ZDE2ZDFkZmUzNmYzMzY0IiwiaCI6Im11cm11cjEyOCJ9 \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "method": "eth_estimateUserOperationGas",
  "params": [
    {
      "sender":"0xb341FEAFaF71b09089d03B7D114599f8F491EE45",
      "nonce":"0x0",
      "initCode":"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",
      "callData":"0x5194544700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
      "callGasLimit":"0x0",
      "verificationGasLimit":"0x0",
      "preVerificationGas":"0x0",
      "maxPriorityFeePerGas":"0x3b9aca00",
      "maxFeePerGas":"0x7a5cf70d5",
      "paymasterAndData":"0x",
      "signature":"0x00000000fffffffffffffffffffffffffffffff0000000000000000000000000000000007aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1c"
    },"0x0000000071727De22E5E9d8BAf0edAc6f37da032"
  ],
  "id": 123
}'
zsh: no matches found: https://testnet-rpc.etherspot.io/v2/11155111?api-key=eyJvcmciOiI2NTIzZjY5MzUwOTBmNzAwMDFiYjJkZWIiLCJpZCI6ImVhMzc3MTNlZDhmYjQ4MWU4ZDE2ZDFkZmUzNmYzMzY0IiwiaCI6Im11cm11cjEyOCJ9

If I using the url like https://polygon-bundler.etherspot.io/ , the error occurs:

curl --request POST \
  --url https://polygon-bundler.etherspot.io/ \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "method": "eth_estimateUserOperationGas",
  "params": [
    {
      "sender":"0xb341FEAFaF71b09089d03B7D114599f8F491EE45",
      "nonce":"0x0",
      "initCode":"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",
      "callData":"0x5194544700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
      "callGasLimit":"0x0",
      "verificationGasLimit":"0x0",
      "preVerificationGas":"0x0",
      "maxPriorityFeePerGas":"0x3b9aca00",
      "maxFeePerGas":"0x7a5cf70d5",
      "paymasterAndData":"0x",
      "signature":"0x00000000fffffffffffffffffffffffffffffff0000000000000000000000000000000007aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1c"
    },"0x0000000071727De22E5E9d8BAf0edAc6f37da032"
  ],
  "id": 123
}'
{"jsonrpc":"2.0","id":123,"error":{"message":"Invalid Entrypoint","code":-32600}}% 

Describe the solution you'd like

Please mention what the correct RPC call in the documentation for EP v0.7 with the API key in documentation.