increase brevity

Co-authored-by: François Rozet <[email protected]>

docs/tutorials/basics.ipynb

@@ -13,7 +13,7 @@
     "- how to instantiate pre-built normalizing flows and finally \n",
     "- how to create custom flow architectures. \n",
     "\n",
-    "Training is covered in subsequent tutorials. This tutorial requires two central imports:"
+    "Training is covered in subsequent tutorials."
    ]
   },
   {