Merge #18396: rpc: add missing HelpExampleRpc for getblockfilter

d18bf0c0b0 rpc: add missing HelpExampleRpc for getblockfilter (Sebastian Falbesoner)

Pull request description:

  From all RPCs in the "blockchain" category, `getblockfilter` is the only one where there is only a CLI example present but not a curl RPC example (all other RPCs in this category have either both or none). This PR adds the missing `HelpExampleRpc` string.

ACKs for top commit:
  emilengler:
    utACK d18bf0c

Tree-SHA512: b37c11bdef439aa9d5736c9e0e0bbcc19aff876744f0c4e099ca5c67c9ff1293f1f9140f0d167ea13fee5396ae017aa4a0f1bae4f7aec8fa80b46beb421561c1

src/rpc/blockchain.cpp

@@ -2178,7 +2178,8 @@ static UniValue getblockfilter(const JSONRPCRequest& request)
                         {RPCResult::Type::STR_HEX, "header", "the hex-encoded filter header"},
                     }},
                 RPCExamples{
-                    HelpExampleCli("getblockfilter", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\" \"basic\"")
+                    HelpExampleCli("getblockfilter", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\" \"basic\"") +
+                    HelpExampleRpc("getblockfilter", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\", \"basic\"")
                 }
             }.Check(request);