change licking docs

Author: yzh211

docs/notebooks/pyosp_licking.ipynb

@@ -106,7 +106,7 @@
     "\n",
     "# swath data with slope less than 5 degree\n",
     "# see also: https://pyosp.readthedocs.io/en/latest/pyosp.curvsp.html#pyosp.curvsp.Base_curv.post_slope\n",
-    "# tpi_small = tpi.post_slope(max_val=5)\n",
+    "tpi_small = tpi.post_slope(max_val=5)\n",
     "\n",
     "distance = tpi_small[0]\n",
     "dat = tpi_small[1]\n",