adjust Statemint to the three digit spec_version format (#667)

cumulus/polkadot-parachains/statemint/src/lib.rs

@@ -90,8 +90,8 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("statemint"),
 	impl_name: create_runtime_str!("statemint"),
 	authoring_version: 1,
-	spec_version: 2,
-	impl_version: 1,
+	spec_version: 100,
+	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 2,
 };