Mention that parameters are not sorted

examples/basic-tour.ipynb

@@ -252,7 +252,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Or as an iterable. Beware that the order has to be alphabetical. You can usee `optimizer.space.keys` for guidance"
+    "Or as an iterable. Beware that the order has to match the order of the initial `pbounds` dictionary. You can usee `optimizer.space.keys` for guidance"
    ]
   },
   {