fix wording

Author: fedorov

notebooks/collections_demos/nlst_exploration.ipynb

@@ -35,7 +35,7 @@
         "\n",
         "_**TL;DR** IDC NLST collection contains a lot more than the CT images available in TCIA, which explains the much larger size. You can still download just the CT images, if that's what you need!_\n",
         "\n",
-        "In this notebook you will find a more involved answer to this question, and explain organization of data in IDC on this example.\n",
+        "In this notebook you will find a more involved answer to this question, and learn about organization of data in IDC on this example.\n",
         "\n",
         "If you have any questions about this notebook or the NLST collection on IDC, please post your questions on [IDC user forum](https://discourse.canceridc.dev/).\n",
         "\n",
@@ -1488,4 +1488,4 @@
   },
   "nbformat": 4,
   "nbformat_minor": 0
-}
+}