Add reference to Apache Impala documentation

docs/content/_index.md

@@ -21,7 +21,7 @@ type: docs
 
 ![Iceberg](./img/Iceberg-logo.png)
 
-**Apache Iceberg is an open table format for huge analytic datasets.** Iceberg adds tables to compute engines including Spark, Trino, PrestoDB, Flink and Hive using a high-performance table format that works just like a SQL table.
+**Apache Iceberg is an open table format for huge analytic datasets.** Iceberg adds tables to compute engines including Spark, Trino, PrestoDB, Flink, Hive and Impala using a high-performance table format that works just like a SQL table.
 
 ### User experience
 

landing-page/content/about/about.html

@@ -19,7 +19,7 @@
  - limitations under the License.
  -->
 
-Iceberg is a high-performance format for huge analytic tables. Iceberg brings the reliability and simplicity of SQL tables to big data, while making it possible for engines like Spark, Trino, Flink, Presto, and Hive to safely work with the same tables, at the same time.
+Iceberg is a high-performance format for huge analytic tables. Iceberg brings the reliability and simplicity of SQL tables to big data, while making it possible for engines like Spark, Trino, Flink, Presto, Hive and Impala to safely work with the same tables, at the same time.
 <div class="button-box">
 <ul class="list-inline intro-social-buttons">
     <li>

landing-page/layouts/partials/header.html

@@ -30,6 +30,9 @@
                 <li>
                     <a class="page-scroll" href="https://prestodb.io/docs/current/connector/iceberg.html" target="_blank">Presto</a>
                 </li>
+                <li>
+                    <a class="page-scroll" href="https://impala.apache.org/docs/build/html/topics/impala_iceberg.html" target="_blank">Impala</a>
+                </li>
                 <li>
                     <a class="page-scroll" href="{{ .Site.BaseURL }}releases">Releases</a>
                 </li>