Comment for formats.py in the wrong place

[jaraco]

I noticed these comments look out of place:

validate-pyproject/src/validate_pyproject/formats.py

Lines 169 to 170 in c150b15

	# None => not cached yet
	# False => cache not available

They were probably meant to apply to the self.downloaded property.

Consider this instead:

diff --git a/setuptools/config/_validate_pyproject/formats.py b/setuptools/config/_validate_pyproject/formats.py
index aacf4092b..a76a1d147 100644
--- a/setuptools/config/_validate_pyproject/formats.py
+++ b/setuptools/config/_validate_pyproject/formats.py
@@ -162,12 +162,15 @@ class _TroveClassifier:
     """
 
     downloaded: typing.Union[None, "Literal[False]", typing.Set[str]]
+    """
+    None => not cached yet
+    False => unavailable
+    set => cached values
+    """
 
     def __init__(self) -> None:
         self.downloaded = None
         self._skip_download = False
-        # None => not cached yet
-        # False => cache not available
         self.__name__ = "trove_classifier"  # Emulate a public function
 
     def _disable_download(self) -> None: