Documentation Inconsistency: Incorrect method count description in GDExtension C++ example page

**Godot 4.5**

**Issue description:**

I found an inconsistency between the documentation and the code example on the page:

"we have our constructor and destructor defined, but there are two other functions that will likely look familiar to some, and one new method."

gdextension_cpp_example/src/gdexample.h
```c++
class GDExample : public Sprite2D {
//...
static void _bind_methods(); // The "new" method?
GDExample(); // Constructor
~GDExample(); // Destructor
void _process(double delta) override; // One "familiar" method
};
```

This creates a confusion between the text (which counts 5 methods) and the actual code (which shows 4). The description of "two other familiar functions and one new method" does not accurately match the provided example.

https://docs.godotengine.org/en/4.5/tutorials/scripting/cpp/gdextension_cpp_example.html