DOC: correct DataFrame.pivot docstring (#14430)
DOC: correct DataFrame.pivot docstring (#14430)

The mention of panels that are created is not correct. You get a multi-index
MJuddBooth/pandas,winklerand/pandas,kdebrab/pandas,jmmease/pandas,pandas-dev/pandas,GuessWhoSamFoo/pandas,gfyoung/pandas,jorisvandenbossche/pandas,louispotok/pandas,dsm054/pandas,linebp/pandas,nmartensen/pandas,rs2/pandas,linebp/pandas,nmartensen/pandas,pandas-dev/pandas,TomAugspurger/pandas,DGrady/pandas,DGrady/pandas,harisbal/pandas,toobaz/pandas,TomAugspurger/pandas,jmmease/pandas,cbertinato/pandas,DGrady/pandas,jorisvandenbossche/pandas,jreback/pandas,nmartensen/pandas,winklerand/pandas,cython-testbed/pandas,gfyoung/pandas,Winand/pandas,jmmease/pandas,toobaz/pandas,rs2/pandas,Winand/pandas,amolkahat/pandas,MJuddBooth/pandas,kdebrab/pandas,jreback/pandas,pandas-dev/pandas,dsm054/pandas,winklerand/pandas,harisbal/pandas,nmartensen/pandas,zfrenchee/pandas,Winand/pandas,gfyoung/pandas,jmmease/pandas,datapythonista/pandas,MJuddBooth/pandas,pratapvardhan/pandas,kdebrab/pandas,cython-testbed/pandas,pandas-dev/pandas,rs2/pandas,pratapvardhan/pandas,nmartensen/pandas,dsm054/pandas,MJuddBooth/pandas,DGrady/pandas,zfrenchee/pandas,linebp/pandas,winklerand/pandas,Winand/pandas,amolkahat/pandas,gfyoung/pandas,linebp/pandas,dsm054/pandas,Winand/pandas,datapythonista/pandas,winklerand/pandas,cython-testbed/pandas,gfyoung/pandas,linebp/pandas,dsm054/pandas,louispotok/pandas,jreback/pandas,toobaz/pandas,louispotok/pandas,pratapvardhan/pandas,linebp/pandas,zfrenchee/pandas,harisbal/pandas,DGrady/pandas,GuessWhoSamFoo/pandas,harisbal/pandas,louispotok/pandas,GuessWhoSamFoo/pandas,rs2/pandas,amolkahat/pandas,datapythonista/pandas,kdebrab/pandas,jmmease/pandas,cbertinato/pandas,amolkahat/pandas,TomAugspurger/pandas,jorisvandenbossche/pandas,cbertinato/pandas,DGrady/pandas,pratapvardhan/pandas,louispotok/pandas,kdebrab/pandas,GuessWhoSamFoo/pandas,zfrenchee/pandas,toobaz/pandas,zfrenchee/pandas,TomAugspurger/pandas,jreback/pandas,cbertinato/pandas,jorisvandenbossche/pandas,GuessWhoSamFoo/pandas,pratapvardhan/pandas,cython-testbed/pandas,datapythonista/pandas,toobaz/pandas,cython-testbed/pandas,cbertinato/pandas,Winand/pandas,nmartensen/pandas,jmmease/pandas,jreback/pandas,winklerand/pandas,harisbal/pandas,amolkahat/pandas,MJuddBooth/pandas