Fixed quotes in NotInstalled error message (#261)
Fixed quotes in NotInstalled error message (#261)

s/.)'/'.)/ -- the quote accidentally went around too much.
d1hotpep/openai_gym,dianchen96/gym,machinaut/gym,Farama-Foundation/Gymnasium,Farama-Foundation/Gymnasium,dianchen96/gym,d1hotpep/openai_gym,machinaut/gym