DOC: Typo fix for .astype() in cheatsheet
- [x] Closes #61523
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

@datapythonista You're very welcome! I noticed that too about the PDF size. I'm not too familiar with the MS Office suite and how PowerPoint exports exactly; I just saved it directly from PowerPoint Version 16.97.2 (25052611) for Mac by following what looked like the standard flow through either "Save" or "Export" (they are identical in this case):

<img width="846" alt="Screenshot 2025-06-01 at 8 02 47 AM" src="https://github.com/user-attachments/assets/daa77a7d-1adb-4c3d-a0f8-4d27299fd02b" />

The dialog only provides two options for formatting: "Best for electronic distribution and accessibility" (491kB) and "Best for printing" (475kB).

I judged "electronic and accessibility" to be the best option because to my understanding it embeds accessibility tags and keeps hyperlinks, which bumps the file size slightly. Happy to go with whatever you think is best! Maybe it's just the version of office. I don't kmow much about office myself, if there isn't much we have control of it's fine. I was just wondering if we knew why it was a bit bigger just by removing a character. No big deal Thanks @brchristian 