docs: update NoCast docstring

faststream/utils/no_cast.py

@@ -8,22 +8,15 @@
 class NoCast(CustomField):
     """A class that represents a custom field without casting.
 
-    Methods:
-        __init__ : Initializes the NoCast object.
-        use : Returns the provided keyword arguments as a dictionary.
+    You can use it to annotate fields, that should not be casted.
+
+    Usage:
+
+    `data: Annotated[..., NoCast()]`
     """
 
     def __init__(self) -> None:
-        """Initialize the NoCast object."""
         super().__init__(cast=False)
 
     def use(self, **kwargs: Any) -> AnyDict:
-        """Return a dictionary containing the keyword arguments passed to the function.
-
-        Args:
-            **kwargs: Keyword arguments
-
-        Returns:
-            Dictionary containing the keyword arguments
-        """
         return kwargs