[doc] update code-block rendering (#11053)

double : prevents code-block section to be rendered, so made it single :
huggingface · Apr 5, 2021 · 6e31014 · 6e31014
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commit 6e31014
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/source/model_doc/gpt.rst b/docs/source/model_doc/gpt.rst
@@ -50,7 +50,7 @@ The original code can be found `here <https://github.com/openai/finetune-transfo
 Note:
 
 If you want to reproduce the original tokenization process of the `OpenAI GPT` paper, you will need to install ``ftfy``
-and ``SpaCy``::
+and ``SpaCy``:
 
 .. code-block:: bash