Fix a typo in the _solve_variation_of_parameters() docstring in ode.py
Fix a typo in the _solve_variation_of_parameters() docstring in ode.py

cccfran/sympy,skidzo/sympy,grevutiu-gabriel/sympy,MridulS/sympy,shipci/sympy,liangjiaxing/sympy,abhiii5459/sympy,chaffra/sympy,hargup/sympy,Titan-C/sympy,hargup/sympy,aktech/sympy,sahilshekhawat/sympy,Sumith1896/sympy,bukzor/sympy,toolforger/sympy,vipulroxx/sympy,meghana1995/sympy,jerli/sympy,bukzor/sympy,Sumith1896/sympy,MridulS/sympy,saurabhjn76/sympy,amitjamadagni/sympy,pandeyadarsh/sympy,atsao72/sympy,sahilshekhawat/sympy,jbbskinny/sympy,Curious72/sympy,cccfran/sympy,kaichogami/sympy,pbrady/sympy,mcdaniel67/sympy,Sumith1896/sympy,garvitr/sympy,hrashk/sympy,farhaanbukhsh/sympy,grevutiu-gabriel/sympy,mcdaniel67/sympy,AkademieOlympia/sympy,aktech/sympy,Shaswat27/sympy,Designist/sympy,garvitr/sympy,kumarkrishna/sympy,jaimahajan1997/sympy,drufat/sympy,Titan-C/sympy,souravsingh/sympy,sampadsaha5/sympy,chaffra/sympy,kaushik94/sympy,meghana1995/sympy,postvakje/sympy,ahhda/sympy,Arafatk/sympy,kaushik94/sympy,rahuldan/sympy,AkademieOlympia/sympy,maniteja123/sympy,wanglongqi/sympy,toolforger/sympy,cccfran/sympy,kaichogami/sympy,atreyv/sympy,lidavidm/sympy,rahuldan/sympy,kevalds51/sympy,maniteja123/sympy,saurabhjn76/sympy,Curious72/sympy,pbrady/sympy,mafiya69/sympy,lidavidm/sympy,sunny94/temp,Designist/sympy,lindsayad/sympy,atsao72/sympy,VaibhavAgarwalVA/sympy,bukzor/sympy,madan96/sympy,sahmed95/sympy,Mitchkoens/sympy,shipci/sympy,emon10005/sympy,hrashk/sympy,souravsingh/sympy,Vishluck/sympy,sunny94/temp,Vishluck/sympy,ga7g08/sympy,moble/sympy,kaichogami/sympy,iamutkarshtiwari/sympy,ChristinaZografou/sympy,yukoba/sympy,ga7g08/sympy,Mitchkoens/sympy,Shaswat27/sympy,Gadal/sympy,AunShiLord/sympy,ahhda/sympy,garvitr/sympy,shikil/sympy,toolforger/sympy,hargup/sympy,Arafatk/sympy,oliverlee/sympy,beni55/sympy,yashsharan/sympy,skirpichev/omg,Davidjohnwilson/sympy,yashsharan/sympy,shikil/sympy,jbbskinny/sympy,Gadal/sympy,drufat/sympy,jamesblunt/sympy,AunShiLord/sympy,shipci/sympy,cswiercz/sympy,atreyv/sympy,VaibhavAgarwalVA/sympy,jamesblunt/sympy,mcdaniel67/sympy,vipulroxx/sympy,pbrady/sympy,debugger22/sympy,Mitchkoens/sympy,liangjiaxing/sympy,Shaswat27/sympy,MechCoder/sympy,debugger22/sympy,oliverlee/sympy,dqnykamp/sympy,sunny94/temp,emon10005/sympy,AkademieOlympia/sympy,drufat/sympy,ga7g08/sympy,cswiercz/sympy,kumarkrishna/sympy,cswiercz/sympy,ChristinaZografou/sympy,farhaanbukhsh/sympy,Vishluck/sympy,emon10005/sympy,abloomston/sympy,atreyv/sympy,asm666/sympy,grevutiu-gabriel/sympy,rahuldan/sympy,AunShiLord/sympy,kevalds51/sympy,mafiya69/sympy,dqnykamp/sympy,VaibhavAgarwalVA/sympy,meghana1995/sympy,kevalds51/sympy,iamutkarshtiwari/sympy,beni55/sympy,moble/sympy,Gadal/sympy,sahmed95/sympy,jaimahajan1997/sympy,moble/sympy,kaushik94/sympy,kmacinnis/sympy,jamesblunt/sympy,shikil/sympy,wyom/sympy,madan96/sympy,Arafatk/sympy,souravsingh/sympy,Curious72/sympy,sahilshekhawat/sympy,saurabhjn76/sympy,sampadsaha5/sympy,wyom/sympy,dqnykamp/sympy,ChristinaZografou/sympy,MridulS/sympy,atsao72/sympy,beni55/sympy,liangjiaxing/sympy,MechCoder/sympy,iamutkarshtiwari/sympy,yukoba/sympy,abloomston/sympy,maniteja123/sympy,postvakje/sympy,lindsayad/sympy,oliverlee/sympy,abloomston/sympy,vipulroxx/sympy,Titan-C/sympy,wanglongqi/sympy,wyom/sympy,sahmed95/sympy,sampadsaha5/sympy,ahhda/sympy,skidzo/sympy,MechCoder/sympy,jerli/sympy,abhiii5459/sympy,madan96/sympy,abhiii5459/sympy,chaffra/sympy,kumarkrishna/sympy,kmacinnis/sympy,farhaanbukhsh/sympy,Davidjohnwilson/sympy,Davidjohnwilson/sympy,jerli/sympy,jbbskinny/sympy,postvakje/sympy,lidavidm/sympy,yukoba/sympy,pandeyadarsh/sympy,debugger22/sympy,wanglongqi/sympy,skidzo/sympy,mafiya69/sympy,pandeyadarsh/sympy,Designist/sympy,aktech/sympy,jaimahajan1997/sympy,lindsayad/sympy,hrashk/sympy,diofant/diofant,kmacinnis/sympy,asm666/sympy,amitjamadagni/sympy,asm666/sympy,yashsharan/sympy