DOC: add example to insert (#39313) (#39500)
DOC: add example to insert (#39313) (#39500)

* DOC: add example to insert (#39313)

* DOC: fix style (#39313)

* Update pandas/core/frame.py

Co-authored-by: nofarmishraki <c0e79f5d54078a50c49695046d5be50bf571b2cb@pecan.ai>
Co-authored-by: Marco Gorelli <6db2da83a2d1aabf2ecda2acf5ab66b030b8d1ef@protonmail.com>
gfyoung/pandas,pandas-dev/pandas,dsm054/pandas,rs2/pandas,jorisvandenbossche/pandas,datapythonista/pandas,gfyoung/pandas,dsm054/pandas,datapythonista/pandas,gfyoung/pandas,rs2/pandas,jorisvandenbossche/pandas,pandas-dev/pandas,dsm054/pandas,rs2/pandas,pandas-dev/pandas,datapythonista/pandas,rs2/pandas,gfyoung/pandas,dsm054/pandas,dsm054/pandas,jorisvandenbossche/pandas,pandas-dev/pandas,datapythonista/pandas,gfyoung/pandas,jorisvandenbossche/pandas