format api doc

cocolato · cocolato · commit 14a88d6f27e7 · 2023-06-14T15:00:09.000Z
diff --git a/lib/matplotlib/legend.py b/lib/matplotlib/legend.py
@@ -640,9 +640,10 @@ def set_loc(self, loc):
 
         Parameters
         ----------
-        loc : {'upper left', 'upper right', 'lower left', 'lower right',
-                    'upper center', 'lower center', 'center left', 'center right'
-                    'center', 'right', 'best'}.
+        loc : str
+            {'upper left', 'upper right', 'lower left', 'lower right',
+            'upper center', 'lower center', 'center left', 'center right'
+            'center', 'right', 'best'}.
             If a figure is using the constrained layout manager,
             the string codes of the loc keyword argument can get better
             layout behaviour using the prefix 'outside'.
