Fixed typo

Author: piyushghai

doc/api/training/smd_data_parallel.rst

@@ -69,7 +69,7 @@ model.
    :maxdepth: 2
 
    sdp_versions/smd_data_parallel_pytorch
-   sdp_versions/smd_data_parallel_pytorch
+   sdp_versions/smd_data_parallel_tensorflow
 
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