removed repetitive datatype hint in the docstring

Co-authored-by: Christian Clauss <[email protected]>

Author: Om-Alve

Diff for: ciphers/fractionated_morse_cipher.py

@@ -83,7 +83,7 @@ def encode_to_morse(plaintext: str) -> str:
     """Encode a plaintext message into Morse code.
 
     Args:
-        plaintext (str): The plaintext message to encode.
+        plaintext: The plaintext message to encode.
 
     Returns:
         str: The Morse code representation of the plaintext message.