update PR template (#2965)
update PR template (#2965)

* template

* typo

Co-authored-by: Rohit Gupta <cb3c4569854e7764e66b4cfd98eab60a0e5fb067@gmail.com>

Co-authored-by: Rohit Gupta <cb3c4569854e7764e66b4cfd98eab60a0e5fb067@gmail.com>
williamFalcon/pytorch-lightning,williamFalcon/pytorch-lightning