Fix "refractor" typo in the PR template (#1402)

Signed-off-by: Sergii Dymchenko <sdym@meta.com>

.github/PULL_REQUEST_TEMPLATE.md

@@ -11,7 +11,7 @@ Fixes # (issue)
 - [ ] New feature (non-breaking change which adds functionality)
 - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
 - [ ] Infra/Build change
-- [ ] Code refractor
+- [ ] Code refactoring
 
 ## Changes