fix MiniProgram launch argument name (ohos) (#700)

ohos/src/main/ets/components/plugin/FluwxPlugin.ets

@@ -271,7 +271,7 @@ export default class FluwxPlugin implements FlutterPlugin, MethodCallHandler, Ab
     request.userName = call.argument("userName");
     request.path = call.argument("path");
     // sdk 内当前没 type 常量, 直接使用传入的参数
-    request.miniprogramType = call.argument("miniprogramType") ?? 0;
+    request.miniprogramType = call.argument("miniProgramType") ?? 0;
 
     const done = await WXAPiHandler.wxApi?.sendReq(this.uiContext, request);
 
@@ -288,4 +288,4 @@ export default class FluwxPlugin implements FlutterPlugin, MethodCallHandler, Ab
 
     result.success(done);
   }
-}
\ No newline at end of file
+}