Modified the examples with the keyword arguments.

docs/examples/userguide/language_basics/kwargs_1.pyx

 def f(a, b, *args, c, d = 42, e, **kwds):
-    # ...
-    return "hello world"
+    ...
+
 
 # We cannot call f with less verbosity than this.
 foo = f(4, "bar", c=68, e=1.0)

docs/examples/userguide/language_basics/kwargs_2.pyx

 def g(a, b, *, c, d):
-    # ...
-    return 'hello world'
+    ...
 
 # We cannot call g with less verbosity than this.
 foo = g(4.0, "something", c=68, d="other")