DOC: Fix formatting issue with DataFrame.info docs
Removed a backslash that was causing the description of the **max_cols** argument from the [DataFrme.info](https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.info.html#pandas.DataFrame.info) method to be merged with the description of the **buf** argument.
![image](https://user-images.githubusercontent.com/32521936/213172824-a61ba4d6-6449-4ce2-a6f2-6d16ce62b381.png)



Sure. I downloaded the CI artifact and checked the HTML. Everything seems fine with DataFrame.info:
![image](https://user-images.githubusercontent.com/32521936/213248300-d5494299-6738-4ca8-9548-55cacf3d1439.png)


Series.info also looks ok (I get the same HTML as the [live site](https://pandas.pydata.org/docs/dev/reference/api/pandas.Series.info.html))



 Excellent, thanks @CarlosGDCJ. I'm re-running the CI job that failed. I think the failure is unrelated, but just to be sure. Thanks @CarlosGDCJ 