minor modification

Author: mahdis-z

python/legend.md

@@ -217,7 +217,7 @@ fig.update_layout(
 
 fig.show()
 ```
-### Legend Size
+### Size of Legend Items
 
 In this example [itemsizing](https://plot.ly/python/reference/#layout-legend-itemsizing) attribute determines the legend items symbols remain constant, regardless of how tiny/huge the bubbles would be in the graph.   
 ```python
@@ -229,14 +229,14 @@ fig.add_trace(go.Scatter(
     x=[1, 2, 3, 4, 5],
     y=[1, 2, 3, 4, 5],
     mode='markers',
-    marker={'size':[10,9,3,6,4], 'sizemode': 'diameter'}
+    marker={'size':10}
 ))
 
 fig.add_trace(go.Scatter(
     x=[1, 2, 3, 4, 5],
     y=[5, 4, 3, 2, 1],
     mode='markers',
-    marker={'size':[700,2000,400,1000,750], 'sizemode':'area'}
+    marker={'size':100}
 ))
 
 fig.update_layout(legend= {'itemsizing': 'constant'})