Add link to PL forum in GH questions template (#3708)
Add link to PL forum in GH questions template (#3708)

* Update how-to-question.md

* Update how-to-question.md

* Apply suggestions from code review

* typo

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

Co-authored-by: Jirka Borovec <b903e28b3fb12ead55c25f3a7816376be3bd063c@users.noreply.github.com>
Co-authored-by: Rohit Gupta <cb3c4569854e7764e66b4cfd98eab60a0e5fb067@gmail.com>
williamFalcon/pytorch-lightning,williamFalcon/pytorch-lightning