Correcting config file name for distributed_docnn. (#103)

Summary:
Typo in file name
Pull Request resolved: #103

Reviewed By: seayoung1112

Differential Revision: D13462928

Pulled By: snisarg

fbshipit-source-id: 00159b235f7a3e8b9e00ad5c27055e2a67aadd79

pytext/docs/source/distributed_training_tutorial.rst

@@ -49,7 +49,7 @@ Download the `SST dataset (The Stanford Sentiment Treebank) <https://gluebenchma
 3. Prepare configuration file
 -----------------------------
 
-Prepare the configuration file for training. A sample config file can be found in your PyText repository at ``demo/configs/rndistributed_docnn.json``. If you haven't set up PyText, please follow :doc:`installation`.
+Prepare the configuration file for training. A sample config file can be found in your PyText repository at ``demo/configs/distributed_docnn.json``. If you haven't set up PyText, please follow :doc:`installation`.
 
 The two parameters that are used for distributed training are: