doc: add documentation interlinks (apache#975)

README.md

@@ -105,6 +105,8 @@ To get started with Apache DataFusion Comet, follow the
 [DataFusion Slack and Discord channels](https://datafusion.apache.org/contributor-guide/communication.html) to connect
 with other users, ask questions, and share your experiences with Comet.
 
+Follow [Apache DataFusion Comet Overview](https://datafusion.apache.org/comet/user-guide/overview.html) to get more detailed information 
+
 ## Contributing
 
 We welcome contributions from the community to help improve and enhance Apache DataFusion Comet. Whether it's fixing

docs/source/user-guide/installation.md

@@ -26,14 +26,9 @@ Make sure the following requirements are met and software installed on your mach
 - Linux
 - Apple OSX (Intel and Apple Silicon)
 
-## Supported Apache Spark versions
-- 3.3
-- 3.4
-- 3.5
-
 ## Requirements
 
-- [Apache Spark supported by Comet](#supported-apache-spark-versions)
+- [Apache Spark supported by Comet](overview.md#supported-apache-spark-versions)
 - JDK 8 and up
 - GLIBC 2.17 (Centos 7) and up
 

docs/source/user-guide/overview.md

@@ -38,7 +38,7 @@ The following diagram illustrates the architecture of Comet:
 
 ![Comet System Diagram](../_static/images/comet-system-diagram.png)
 
-## Current Status
+## Supported Apache Spark versions
 
 Comet currently supports the following versions of Apache Spark: