Various small grammar and formatting fixes for the solveset docs
Various small grammar and formatting fixes for the solveset docs

chaffra/sympy,postvakje/sympy,chaffra/sympy,souravsingh/sympy,rahuldan/sympy,chaffra/sympy,Titan-C/sympy,yashsharan/sympy,ChristinaZografou/sympy,yashsharan/sympy,skidzo/sympy,souravsingh/sympy,drufat/sympy,hargup/sympy,madan96/sympy,aktech/sympy,kaushik94/sympy,drufat/sympy,sampadsaha5/sympy,Titan-C/sympy,aktech/sympy,ChristinaZografou/sympy,ChristinaZografou/sympy,rahuldan/sympy,skidzo/sympy,skidzo/sympy,rahuldan/sympy,kaushik94/sympy,drufat/sympy,kaushik94/sympy,aktech/sympy,souravsingh/sympy,hargup/sympy,madan96/sympy,Titan-C/sympy,hargup/sympy,jaimahajan1997/sympy,postvakje/sympy,yashsharan/sympy,madan96/sympy,jaimahajan1997/sympy,postvakje/sympy,jaimahajan1997/sympy,sampadsaha5/sympy,sampadsaha5/sympy