Format sample stanza to render as Python code.

diceware/random_sources.py

@@ -42,21 +42,19 @@ generate.
 Finally, to register the source, add some stanza in `setup.py` of your
 project that looks like::
 
-    ...
+    # ...
     setup(
-        ...
+        # ...
         entry_points={
-            'console_scripts': [
-                'diceware = diceware:main',
-            ],
+            # console scripts and other entry points...
             'diceware_random_sources': [
                 'myrandom = mypkg.mymodule:MyRandomSource',
                 'myothersrc = mypkg.mymodule:MyOtherSource',
             ],
         },
-        ...
+        # ...
     )
-    ...
+    # ...
 
 Here the `myrandom` and `myothersrc` lines register random sources that
 (if installed) `diceware` will find on startup and offer to users under