Simplify comment

Author: jhale

python/pyproject.toml

@@ -4,13 +4,10 @@
 # NOTE: petsc4py is an optional build dependency, therefore we don't
 # list it here.
 [build-system]
-# scikit-build-core>=0.11 has SPDX license support PEP 639
+# scikit-build-core>=0.11 has SPDX license support PEP 639.
 # scikit-build-core>=1.0.0: editable installs need its PathFinder-based
-# module resolution. Older versions' editable redirect always fails to
-# import dolfinx.cpp, since the nanobind-generated dolfinx/cpp/*.pyi stub
-# directory sits alongside the compiled dolfinx/cpp.<ext> module and
-# confuses their file-vs-package classifier.
-# nanobind>=2.9.2 has working recursive stubgen
+# module resolution, required for nanobind-stubgen `import dolfinx.cpp`.
+# nanobind>=2.9.2 has working recursive stubgen.
 requires = ["scikit-build-core>=1.0.0", "nanobind>=2.9.2", "mpi4py"]
 build-backend = "scikit_build_core.build"