Update README.md

README.md

@@ -49,7 +49,7 @@ example_prompts = {
 ```
 The model has also learned for the length of the summary to be specified in words by a range "x-y words" or e.g. "~/approximately/about/ x words."
 
-Prompts should be formatted with a colon at the end so that the input to the model is formatted as e.g. "Summarize the following: \n\n  {input text}"
+Prompts should be formatted with a colon at the end so that the input to the model is formatted as e.g. "Summarize the following: \n\n  {input_text}"
 
 After `pip install transformers` run the following code: