Исправление структуры документации

docs/vector2/copy-eng.md

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+# Copying
+
+The copy functions allow you to copy the coordinate values of one vector to another vector.
+
+Function for **BgcVector2FP32**:
+
+```c
+    inline void bgc_vector2_copy_fp32(const BgcVector2FP32* from, BgcVector2FP32* to);
+```
+
+Function for **BgcVector2FP64**:
+
+```c
+    inline void bgc_vector2_copy_fp64(const BgcVector2FP64* from, BgcVector2FP64* to);
+```
+
+Each of these functions is equivalent to the following lines of code:
+
+```c
+    to->x1 = from->x1;
+    to->x2 = from->x2;
+```
+
+You should not pass invalid pointers to these functions. The NULL (0) value is also considered invalid.
+
+The **from** parameter must be a pointer to a two-dimensional vector whose coordinates are to be copied. The coordinates of the **from** vector will not change after the function call.
+
+The **to** parameter must be a pointer to a two-dimensional vector whose coordinates are to be changed. The coordinates of the **to** vector will become the same as those of the **from** vector after the function call.
+
+Example of use:
+
+```c
+    #include <stdio.h>
+    #include <basic-geometry.h>
+
+    int main()
+    {
+        BgcVector2FP32 my_vector1, my_vector2;
+
+        bgc_vector2_set_values_fp32(-2, 7, &my_vector1);
+
+        bgc_vector2_copy_fp32(&my_vector1, &my_vector2);
+
+        printf("x1 = %f, x2 = %f\n", my_vector2.x1, my_vector2.x2);
+
+        return 0;
+    }
+```
+
+[Documentation](../intro-eng.md) / [2D vectors](../vector2-eng.md)