add site_url for docs

Author: MrPowers

mkdocs.yml

@@ -16,6 +16,7 @@
 # under the License.
 
 site_name: Apache Sedona™
+site_url: https://sedona.apache.org
 site_description: Apache Sedona™ is a cluster computing system for processing large-scale spatial data. Sedona extends existing cluster computing systems, such as Apache Spark, Apache Flink, and Snowflake, with a set of out-of-the-box distributed Spatial Datasets and Spatial SQL that efficiently load, process, and analyze large-scale spatial data across machines.
 nav:
   - Home: index.md