Update RayTracingInOneWeekend.html

Author: JC-ProgJava

books/RayTracingInOneWeekend.html

@@ -1141,7 +1141,7 @@
 `std::vector` is included with the `<vector>` header.
 
 Finally, the `using` statements in listing [hittable-list-initial] tell the compiler that we'll be
-getting `shared_ptr` and `make_shared` from the `std` library, so we don't need to prefex these with
+getting `shared_ptr` and `make_shared` from the `std` library, so we don't need to prefix these with
 `std::` every time we reference them.