Fixed literal typing in rank and resample methods (#52745)

Co-authored-by: Milad Maani Jou <[email protected]>

Author: maanijou

pandas/core/generic.py

@@ -8613,10 +8613,10 @@ def resample(
         self,
         rule,
         axis: Axis | lib.NoDefault = lib.no_default,
-        closed: str | None = None,
-        label: str | None = None,
-        convention: str = "start",
-        kind: str | None = None,
+        closed: Literal["right", "left"] | None = None,
+        label: Literal["right", "left"] | None = None,
+        convention: Literal["start", "end", "s", "e"] = "start",
+        kind: Literal["timestamp", "period"] | None = None,
         on: Level = None,
         level: Level = None,
         origin: str | TimestampConvertibleTypes = "start_day",
@@ -9173,9 +9173,9 @@ def last(self, offset) -> Self:
     def rank(
         self,
         axis: Axis = 0,
-        method: str = "average",
+        method: Literal["average", "min", "max", "first", "dense"] = "average",
         numeric_only: bool_t = False,
-        na_option: str = "keep",
+        na_option: Literal["keep", "top", "bottom"] = "keep",
         ascending: bool_t = True,
         pct: bool_t = False,
     ) -> Self: