expansion(kRSGeneric): Fix double apostrophe (non-apostrophe, simplif…

…ied radical)

via https://www.unicode.org/reports/tr38/#kRSUnicode:

> The standard radical-stroke count for this ideograph in the form “radical.additional strokes.” The radical is indicated by a number in the range 1–214, followed by an optional single apostrophe (U+0027 ' apostrophe) or double apostrophe ('') suffix. A single apostrophe after the radical indicates a Chinese simplified version of the given radical. Two apostrophes after the radical indicates a non-Chinese simplified version of the given radical. The “additional strokes” value is the residual stroke-count, the count of all strokes remaining after eliminating all strokes associated with the radical.

src/unihan_etl/expansion.py

@@ -578,7 +578,7 @@ def _expand_kRSGeneric(value: t.List[str]) -> t.List[kRSGenericDict]:
     pattern = re.compile(
         r"""
         (?P<radical>[1-9][0-9]{0,2})
-        (?P<simplified>\'?)\.
+        (?P<simplified>\'{0,2})\.
         (?P<strokes>-?[0-9]{1,2})
     """,
         re.X,