docs: clarify where to report Pyright-specific typing gaps #2010

Job	Run time
Build & verify package	21s
Check types using supported type checkers	20s
Verify dev env	9s
Tests on pypy-3.10	19s
Run doctests & render changelog	15s
Tests & Mypy on 3.10	1m 12s
Tests & Mypy on 3.13	1m 0s
Tests & Mypy on 3.11	1m 0s
Tests & Mypy on 3.9	37s
Tests & Mypy on 3.14	1m 17s
Tests & Mypy on 3.12	1m 3s
Combine & check coverage	12s
required-checks-pass	4s
	7m 49s

Provide feedback