Update documentation

Author: spatialthoughts

README.html

@@ -185,6 +185,7 @@
 <li class="toctree-l1"><a class="reference internal" href="notebooks/geopandas_spatial_query.html">Performing Spatial Queries</a></li>
 <li class="toctree-l1"><a class="reference internal" href="notebooks/geopandas_extract_from_excel.html">Extract a Shapefile Subset</a></li>
 <li class="toctree-l1"><a class="reference internal" href="notebooks/geopandas_fuzzy_table_join.html">Performing Fuzzy Table Joins</a></li>
+<li class="toctree-l1"><a class="reference internal" href="notebooks/geopandas_flood_frequncy.html">Creating a Flood Frequncy Map</a></li>
 </ul>
 <p aria-level="2" class="caption" role="heading"><span class="caption-text">Xarray for Raster Data Processing</span></p>
 <ul class="nav bd-sidenav">