Fix doxygen docs for runtime API reference (#6067)

Fix doxygen docs for runtime API reference (#6061)

Summary: Pull Request resolved: #6061

Reviewed By: dbort

Differential Revision: D64129146

Pulled By: dvorjackz

fbshipit-source-id: 282d74ccfd5e9d660735260248a886f811ab74a4
(cherry picked from commit b118d8e)

Co-authored-by: Jack Zhang <[email protected]>

Author: pytorchbot

docs/source/executorch-runtime-api-reference.rst

@@ -11,32 +11,32 @@ For detailed information on how APIs evolve and the deprecation process, please
 Model Loading and Execution
 ---------------------------
 
-.. doxygenclass:: torch::executor::DataLoader
+.. doxygenclass:: executorch::runtime::DataLoader
   :members:
 
-.. doxygenclass:: torch::executor::MemoryAllocator
+.. doxygenclass:: executorch::runtime::MemoryAllocator
   :members:
 
-.. doxygenclass:: torch::executor::HierarchicalAllocator
+.. doxygenclass:: executorch::runtime::HierarchicalAllocator
   :members:
 
-.. doxygenclass:: torch::executor::MemoryManager
+.. doxygenclass:: executorch::runtime::MemoryManager
   :members:
 
-.. doxygenclass:: torch::executor::Program
+.. doxygenclass:: executorch::runtime::Program
   :members:
 
-.. doxygenclass:: torch::executor::Method
+.. doxygenclass:: executorch::runtime::Method
   :members:
 
-.. doxygenclass:: torch::executor::MethodMeta
+.. doxygenclass:: executorch::runtime::MethodMeta
   :members:
 
 Values
 ------
 
-.. doxygenstruct:: torch::executor::EValue
+.. doxygenstruct:: executorch::runtime::EValue
   :members:
 
-.. doxygenclass:: torch::executor::Tensor
+.. doxygenclass:: executorch::aten::Tensor
   :members: