Add README.md Trademarks (#49)

* Add trademarks to README

* Render trademark icon correctly

* Include feedback

* Full Apache attribution

* Remove PyIceberg

README.md

@@ -18,7 +18,7 @@
 
 # Polaris Catalog
 
-<a href="https://www.snowflake.com/blog/polaris-catalog-open-source/" target="_blank">Polaris Catalog</a> is an open source catalog for Apache Iceberg. Polaris Catalog implements Iceberg’s open <a href="https://github.com/apache/iceberg/blob/main/open-api/rest-catalog-open-api.yaml" target="_blank">REST API</a> for multi-engine interoperability with Apache Doris, Apache Flink, Apache Spark, PyIceberg, StarRocks and Trino. 
+<a href="https://www.snowflake.com/blog/polaris-catalog-open-source/" target="_blank">Polaris Catalog</a> is an open source catalog for Apache Iceberg :tm:. Polaris Catalog implements Iceberg’s open <a href="https://github.com/apache/iceberg/blob/main/open-api/rest-catalog-open-api.yaml" target="_blank">REST API</a> for multi-engine interoperability with Apache Doris :tm:, Apache Flink® , Apache Spark :tm:, StarRocks and Trino. 
 
 ![Polaris Catalog Header](docs/img/logos/Polaris-Catalog-BLOG-symmetrical-subhead.png)
 
@@ -31,12 +31,12 @@ Polaris Catalog is open source under an Apache 2.0 license.
 
 ## API Docs
 
-API docs are hosted via Github Pages at https://polaris-catalog.github.io/polaris. All updates to the main branch
+API docs are hosted via Github Pages at https://polaris.io. All updates to the main branch
 update the hosted docs.
 
-The Polaris management API docs are found [here](https://polaris-catalog.github.io/polaris/index.html#tag/polaris-management-service_other)
+The Polaris management API docs are found [here](https://polaris.io/index.html#tag/polaris-management-service_other)
 
-The open source Iceberg REST API docs are found [here](https://polaris-catalog.github.io/polaris/index.html#tag/Configuration-API)
+The Apache Iceberg REST API docs are found [here](https://polaris.io/index.html#tag/Configuration-API)
 
 Docs are generated using [Redocly](https://redocly.com/docs/cli/installation). They can be regenerated by running the following commands
 from the project root directory
@@ -193,3 +193,7 @@ You must run the following as the first query in your spark-sql shell to actuall
 ```
 use polaris;
 ```
+
+### Trademark Attribution 
+
+_Apache Iceberg, Iceberg, Apache Spark, Spark, Apache Flink, Flink, Apache Doris, Doris, Apache, the Apache feather logo, the Apache Iceberg project logo, the Apache Spark project logo, the Apache Flink project logo, and the Apache Doris project logo are either registered trademarks or trademarks of The Apache Software Foundation. Copyright © 2024 The Apache Software Foundation._