make the function *call* more visible (satwikkansal#104)

kannes · satwikkansal · commit b0e7a816ec35 · 2018-12-06T01:15:59.000+05:30
It is easy to overlook the () in that appending operation, I propose adding a short comment.
diff --git a/README.md b/README.md
@@ -555,7 +555,7 @@ for x in range(7):
     def some_func():
         return x
     funcs.append(some_func)
-    results.append(some_func())
+    results.append(some_func())  # note the function call here
 
 funcs_results = [func() for func in funcs]
 ```
