update draw_labels docstring

Author: nizartaha

src/compas_rhino/utilities/drawing.py

@@ -110,7 +110,7 @@ def wrapper(*args, **kwargs):
 
 @wrap_drawfunc
 def draw_labels(labels, **kwargs):
-    """Draw labels as text dots and optionally set individual font, fontsize, name and color.
+    """Draw labels as text dots and optionally set individual font, fontsize, name, layer and color.
 
     Parameters
     ----------