fix linter errors

Author: Avaneesh-axiom

examples/ecc/openvm.toml

@@ -7,5 +7,4 @@ supported_modulus = ["1157920892373161954235709850086879078532699846656405640394
 [[app_vm_config.ecc.supported_curves]]
 modulus = "115792089237316195423570985008687907853269984665640564039457584007908834671663"
 scalar = "115792089237316195423570985008687907852837564279074904382605163141518161494337"
-a = "0"
-b = "7"
+coeffs = { type = "SwCurve", a = "0", b = "7" }