Sync SDL3 wiki -> header

[ci skip]

include/SDL3/SDL_begin_code.h

@@ -295,7 +295,6 @@
  *    float x, y, z, w;
  * } SDL_ALIGNED(16) MySIMDAlignedData;
  *
- *
  * // make sure this one field in a struct is aligned to 16 bytes for SIMD access.
  * typedef struct {
  *    SomeStuff stuff;