Update Wire fillet docstring (#1630)

* Update docstring

* Update docstrings of Workplane speical methods, return type

Author: lorenzncode

cadquery/cq.py

@@ -4502,24 +4502,27 @@ def __iter__(self: T) -> Iterator[Shape]:
     def filter(self: T, f: Callable[[CQObject], bool]) -> T:
         """
         Filter items using a boolean predicate.
+
         :param f: Callable to be used for filtering.
         :return: Workplane object with filtered items.
         """
 
         return self.newObject(filter(f, self.objects))
 
-    def map(self: T, f: Callable[[CQObject], CQObject]):
+    def map(self: T, f: Callable[[CQObject], CQObject]) -> T:
         """
         Apply a callable to every item separately.
+
         :param f: Callable to be applied to every item separately.
         :return: Workplane object with f applied to all items.
         """
 
         return self.newObject(map(f, self.objects))
 
-    def apply(self: T, f: Callable[[Iterable[CQObject]], Iterable[CQObject]]):
+    def apply(self: T, f: Callable[[Iterable[CQObject]], Iterable[CQObject]]) -> T:
         """
         Apply a callable to all items at once.
+
         :param f: Callable to be applied.
         :return: Workplane object with f applied to all items.
         """
@@ -4529,6 +4532,7 @@ def apply(self: T, f: Callable[[Iterable[CQObject]], Iterable[CQObject]]):
     def sort(self: T, key: Callable[[CQObject], Any]) -> T:
         """
         Sort items using a callable.
+
         :param key: Callable to be used for sorting.
         :return: Workplane object with items sorted.
         """
@@ -4537,11 +4541,12 @@ def sort(self: T, key: Callable[[CQObject], Any]) -> T:
 
     def invoke(
         self: T, f: Union[Callable[[T], T], Callable[[T], None], Callable[[], None]]
-    ):
+    ) -> T:
         """
         Invoke a callable mapping Workplane to Workplane or None. Supports also
         callables that take no arguments such as breakpoint. Returns self if callable
         returns None.
+
         :param f: Callable to be invoked.
         :return: Workplane object.
         """

cadquery/occ_impl/shapes.py

@@ -2517,7 +2517,7 @@ def fillet(
     ) -> "Wire":
         """
         Apply 2D or 3D fillet to a wire
-        :param wire: The input wire to fillet. Currently only open wires are supported
+
         :param radius: the radius of the fillet, must be > zero
         :param vertices: Optional list of vertices to fillet. By default all vertices are fillet.
         :return: A wire with filleted corners