[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

colour_visuals/planckian_locus.py

@@ -303,7 +303,7 @@ def update(self) -> None:
 
             text = gfx.Text(
                 gfx.TextGeometry(
-                    f'{as_int_scalar(label)}{"M" if self._mireds else "K"}',
+                    f"{as_int_scalar(label)}{'M' if self._mireds else 'K'}",
                     font_size=CONSTANTS_COLOUR_STYLE.font.size,
                     screen_space=True,
                     anchor="Bottom-Left",