Make Series.map() documentation a bit more verbose
Make Series.map() documentation a bit more verbose

Author: manuels <manuel.schoelling@gmx.de>

Closes #15235 from manuels/patch-1 and squashes the following commits:

c5113f2 [manuels] Make Series.map() documentation a bit more verbose

jreback/pandas,pandas-dev/pandas,rs2/pandas,gfyoung/pandas,jreback/pandas,datapythonista/pandas,winklerand/pandas,DGrady/pandas,nmartensen/pandas,datapythonista/pandas,toobaz/pandas,jreback/pandas,jmmease/pandas,nmartensen/pandas,zfrenchee/pandas,nmartensen/pandas,dsm054/pandas,jreback/pandas,harisbal/pandas,kdebrab/pandas,winklerand/pandas,cbertinato/pandas,cython-testbed/pandas,linebp/pandas,jmmease/pandas,kdebrab/pandas,amolkahat/pandas,MJuddBooth/pandas,cython-testbed/pandas,Winand/pandas,winklerand/pandas,linebp/pandas,louispotok/pandas,cbertinato/pandas,gfyoung/pandas,pratapvardhan/pandas,Winand/pandas,dsm054/pandas,MJuddBooth/pandas,rs2/pandas,Winand/pandas,toobaz/pandas,DGrady/pandas,louispotok/pandas,jorisvandenbossche/pandas,harisbal/pandas,cython-testbed/pandas,zfrenchee/pandas,linebp/pandas,gfyoung/pandas,jorisvandenbossche/pandas,datapythonista/pandas,jorisvandenbossche/pandas,linebp/pandas,winklerand/pandas,Winand/pandas,cython-testbed/pandas,kdebrab/pandas,jmmease/pandas,DGrady/pandas,zfrenchee/pandas,TomAugspurger/pandas,gfyoung/pandas,louispotok/pandas,cython-testbed/pandas,amolkahat/pandas,winklerand/pandas,TomAugspurger/pandas,linebp/pandas,amolkahat/pandas,jmmease/pandas,amolkahat/pandas,DGrady/pandas,DGrady/pandas,nmartensen/pandas,GuessWhoSamFoo/pandas,TomAugspurger/pandas,nmartensen/pandas,gfyoung/pandas,cbertinato/pandas,toobaz/pandas,cbertinato/pandas,Winand/pandas,dsm054/pandas,datapythonista/pandas,Winand/pandas,TomAugspurger/pandas,rs2/pandas,amolkahat/pandas,linebp/pandas,zfrenchee/pandas,jreback/pandas,pratapvardhan/pandas,kdebrab/pandas,GuessWhoSamFoo/pandas,cbertinato/pandas,jmmease/pandas,pratapvardhan/pandas,MJuddBooth/pandas,dsm054/pandas,toobaz/pandas,winklerand/pandas,jorisvandenbossche/pandas,toobaz/pandas,jmmease/pandas,rs2/pandas,MJuddBooth/pandas,GuessWhoSamFoo/pandas,zfrenchee/pandas,GuessWhoSamFoo/pandas,nmartensen/pandas,DGrady/pandas,pandas-dev/pandas,MJuddBooth/pandas,harisbal/pandas,harisbal/pandas,harisbal/pandas,dsm054/pandas,kdebrab/pandas,GuessWhoSamFoo/pandas,pandas-dev/pandas,louispotok/pandas,pratapvardhan/pandas,louispotok/pandas,pandas-dev/pandas,pratapvardhan/pandas