Minor updates to NWM route-link notebook (#19)

* update/clarify comments
Co-authored-by: James Halgren <[email protected]>

nwm_network/route_link_fsspec.ipynb

@@ -247,6 +247,7 @@
    "source": [
     "d = independent_networks\n",
     "for k in sorted(d, key=lambda k: len(d[k]), reverse=True):\n",
+    "    # if 1==1:\n",
     "    if len(d[k]) == 8:\n",
     "        print(k, len(d[k]))"
    ]
@@ -267,6 +268,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "# segment = -22811611  # Mississippi River\n",
     "segment = -20427622\n",
     "print(segment, len(independent_networks[segment]))\n",
     "\n",
@@ -505,7 +507,7 @@
    "id": "26516738-1e80-416b-9e56-10e9cf846909",
    "metadata": {},
    "source": [
-    "We can chain the segment IDs together -- this can be useful for instance if we want to query all IDs in a given basin. "
+    "We can chain the segment IDs together from a given list of reaches associated with a tailwater -- this can be useful for instance if we want to query all IDs in a given basin. "
    ]
   },
   {