refactor: update comment in Color class for clarity on hex color representation

Author: ya7010

src/tppt/types/_color.py

@@ -28,7 +28,7 @@ def __init__(self, r: str | int, g: int | None = None, b: int | None = None):
 
             match len(r):
                 case 4:
-                    # #123 は #112233 と同じであることに注意
+                    # Note that #123 is the same as #112233
                     self.r = int(r[1:2] * 2, 16)
                     self.g = int(r[2:3] * 2, 16)
                     self.b = int(r[3:4] * 2, 16)