Slight fixes in the examples(#748)

Author: Matic Lubej

examples/io/SentinelHubIO.ipynb

@@ -280,7 +280,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "add_dem = SentinelHubDemTask(data_collection=DataCollection.DEM_COPERNICUS_30, resolution=resolution, config=config)"
+    "add_dem = SentinelHubDemTask(\n",
+    "    feature=\"dem\", data_collection=DataCollection.DEM_COPERNICUS_30, resolution=resolution, config=config\n",
+    ")"
    ]
   },
   {
@@ -711,7 +713,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.10"
+   "version": "3.10.4"
   },
   "toc": {
    "base_numbering": 1,

examples/water-monitor/WaterMonitorWorkflow.ipynb

@@ -526,8 +526,8 @@
     "    observed = closing(eopatch.mask[\"WATER_MASK\"][idx, ..., 0], disk(1))\n",
     "    nominal = sobel(eopatch.mask_timeless[\"NOMINAL_WATER\"][..., 0])\n",
     "    observed = sobel(observed)\n",
-    "    nominal = np.ma.masked_where(~nominal, nominal)\n",
-    "    observed = np.ma.masked_where(~observed, observed)\n",
+    "    nominal = np.ma.masked_where(~nominal.astype(bool), nominal)\n",
+    "    observed = np.ma.masked_where(~observed.astype(bool), observed)\n",
     "\n",
     "    ax.imshow(nominal, cmap=plt.cm.Reds)\n",
     "    ax.imshow(observed, cmap=plt.cm.Blues)\n",