DOC: improve explanation of con argument DataFrame.to_sql (#34944)
DOC: improve explanation of con argument DataFrame.to_sql (#34944)

* DOC: added example of Connection as con argument to to_sql

* DOC: fixed styling in to_sql docstring

* DOC: fixed styling in to_sql docstring

* DOC: fixed styling in to_sql docstring

* revert accidental changes

* DOC: fixed context manager example in to_sql

* DOC: fixed typo in to_sql docstring
dsm054/pandas,gfyoung/pandas,pandas-dev/pandas,dsm054/pandas,jorisvandenbossche/pandas,datapythonista/pandas,gfyoung/pandas,rs2/pandas,jorisvandenbossche/pandas,gfyoung/pandas,datapythonista/pandas,dsm054/pandas,rs2/pandas,jreback/pandas,rs2/pandas,datapythonista/pandas,jreback/pandas,gfyoung/pandas,jorisvandenbossche/pandas,gfyoung/pandas,pandas-dev/pandas,jreback/pandas,jorisvandenbossche/pandas,pandas-dev/pandas,rs2/pandas,pandas-dev/pandas,jreback/pandas,datapythonista/pandas,dsm054/pandas,jreback/pandas,dsm054/pandas