Update tuto_D_create_semantic_tags.md

docs: fix typo

Docs/tuto_D_create_semantic_tags.md

@@ -61,7 +61,7 @@ The new semantic tag is ready to be used. Only the meshes stored inside the UE f
 
 This step is not directly related with semantic segmentation. However, these tags can be used to filter the bounding box query in [carla.World](python_api.md#carla.World). In order to do this, the tag must be added to the [carla.CityObjectLabel](python_api.md#carla.CityObjectLabel) enum in the PythonAPI.  
 
-__Open `World.cpp`__ in `carla/PythonAPI/carla/sourc/libcarla` and add the new tag by the end of the enum.  
+__Open `World.cpp`__ in `carla/PythonAPI/carla/source/libcarla` and add the new tag by the end of the enum.  
 
 ![city_object_label](img/tuto_D_create_semantic_tags/06_city_object_label.jpg)
 
@@ -84,4 +84,4 @@ Sensors reference</a>
 Add new props</a>
 </p>
 
-</div>
+</div>