Update DICOMweb access documentation link

Author: fedorov

notebooks/advanced_topics/idc_dicomweb_access.ipynb

@@ -32,7 +32,7 @@
         "# IDC DICOMweb data access for pathology whole-slide images\n",
         "\n",
         "This notebook accompanies the documentation article [IDC DICOMweb data access\n",
-        "](tbd) for the NCI Imaging Data Commons, which describes how one can access IDC pathology data using DICOMweb.\n",
+        "](https://learn.canceridc.dev/data/downloading-data/dicomweb-access) for the NCI Imaging Data Commons, which describes how one can access IDC pathology data using DICOMweb.\n",
         "\n",
         "This notebook solely replicates the content of the code cells from the documentation article above for convenience. Please read the actual article for details!\n",
         "\n",
@@ -319,4 +319,4 @@
       "outputs": []
     }
   ]
-}
+}