Update the description in the 201_11_CcdVisit_table notebook to set column count to 50

Author: stvoutsin

DP1/200_Data_Products/201_Catalogs/201_11_CcdVisit_table.ipynb

@@ -65,7 +65,7 @@
     "\n",
     "* TAP table name: `dp1.CcdVisit`\n",
     "* Butler table name: `visit_detector_table`\n",
-    "* columns: 51\n",
+    "* columns: 50\n",
     "* rows: 16071\n",
     "\n",
     "**Related tutorials:** The tutorial for the `Visit` table is also in this series. The TAP and Butler data access services are demonstrated in the 100-level \"How to\" tutorials."