Clarified statement regarding sampled DynamicMap restriction

doc/Tutorials/Dynamic_Map.ipynb

@@ -546,7 +546,7 @@
     "\n",
     "* Sampled ``DynamicMaps`` do not visualize themselves in isolation (as we have already seen).\n",
     "* You cannot build a layout consisting of ``DynamicMaps`` only as at least one HoloMap is needed to define the samples.\n",
-    "* There cannot be more dimensions declared in the sampled ``DynamicMap`` than across the rest of the layout."
+    "* There cannot be more dimensions declared in the sampled ``DynamicMap`` than across the rest of the layout. We hope to relax this restriction in future."
    ]
   },
   {