fix doctest in demo-number-theory

fchapoton · fchapoton · commit 09fa791c1487 · 2023-02-03T10:55:14.000+01:00
diff --git a/demo-number-theory.rst b/demo-number-theory.rst
@@ -15,6 +15,7 @@ Construct an elliptic curve using John Cremona's table::
 Use *matplotlib* to plot it::
 
     sage: E.plot(thickness=3)
+    Graphics object consisting of 2 graphics primitives
 
 Use *mwrank* to do a 2-descent::
 
