Repository: huggingface/transformers
Pull request: fixed json syntax error for zero2 configuration file found in deepspeed.md

# What does this PR do?
It fixes Json syntax error for example zero2 json configuration file.

(I accidentatlly closed a PR related to it so i have to make another PR)
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Changed files:
filename: docs/source/en/deepspeed.md
patch: @@ -196,7 +196,7 @@ ZeRO-2 shards the optimizer and gradient states across GPUs. This stage is prima
         "overlap_comm": true,
         "reduce_scatter": true,
         "reduce_bucket_size": 5e8,
-        "contiguous_gradients": true
+        "contiguous_gradients": true,
         "round_robin_gradients": true
     }
 }

filename: docs/source/ko/deepspeed.md
patch: @@ -211,7 +211,7 @@ ZeRO-2는 GPU에서 옵티마이저와 그레이디언트를 분할합니다. 
         "overlap_comm": true,
         "reduce_scatter": true,
         "reduce_bucket_size": 5e8,
-        "contiguous_gradients": true
+        "contiguous_gradients": true,
         "round_robin_gradients": true
     }
 }