fix tidy

Author: Semyon1104

include/layers/BinaryOpLayer.hpp

@@ -20,7 +20,7 @@ class BinaryOpLayer : public Layer {
   static std::string get_name() { return "Binary Operation Layer"; }
   void run(const Tensor& input, Tensor& output) override;
   void run(const Tensor& A, const Tensor& B, Tensor& output);
-  bool is_scalar_tensor(const Tensor& t);
+  static bool is_scalar_tensor(const Tensor& t);
 
 #ifdef ENABLE_STATISTIC_WEIGHTS
   Tensor get_weights() override {