DOC: Add notes about M and Y to to_timedelata documentation.  (#34968) (#34979)
DOC: Add notes about M and Y to to_timedelata documentation.  (#34968) (#34979)

* DOC: Add notes about M and Y to to_timedelata documentation.  (#34968)

* DOC: Update notes about M and Y to to_timedelata documentation.  (#34968)

* DOC: Add notes about M and Y to to_timedelata documentation.  (#34968)
rs2/pandas,pandas-dev/pandas,dsm054/pandas,dsm054/pandas,jorisvandenbossche/pandas,rs2/pandas,jorisvandenbossche/pandas,gfyoung/pandas,jorisvandenbossche/pandas,dsm054/pandas,datapythonista/pandas,jreback/pandas,dsm054/pandas,gfyoung/pandas,jreback/pandas,gfyoung/pandas,rs2/pandas,datapythonista/pandas,gfyoung/pandas,pandas-dev/pandas,pandas-dev/pandas,jreback/pandas,jreback/pandas,dsm054/pandas,pandas-dev/pandas,datapythonista/pandas,rs2/pandas,jreback/pandas,gfyoung/pandas,jorisvandenbossche/pandas,datapythonista/pandas