upgrading benchmark image (#266)

Author: javier

documentation/why-questdb.md

@@ -88,7 +88,7 @@ on stronger hardware:
 <Screenshot
   alt="A chart showing high-cardinality ingestion performance of InfluxDB, TimescaleDB, and QuestDB"
   src="images/pages/index/min-hardware-comp-graph.webp"
-  width={550}
+  width={650}
   title="QuestDB on an RPi5 outperforming competitors on optimal hardware"
 />
 
@@ -164,4 +164,4 @@ Feel free to reach out using the following channels:
 - [Raise an issue on GitHub](https://github.com/questdb/questdb/issues/new/choose)
 - [Join our community forums](https://community.questdb.com/)
 - [QuestDB on Stack Overflow](https://stackoverflow.com/questions/tagged/questdb)
-- or email us at [[email protected]](mailto:[email protected])
+- or email us at [[email protected]](mailto:[email protected])