Updates references to the I/O connector skill

Author: chamikaramj

.agent/skills/README.md

@@ -30,6 +30,7 @@ This directory contains skills that help the agent perform specialized tasks in
 | [contributing](contributing/SKILL.md) | PR workflow, issue management, code review, release cycles |
 | [gradle-build](gradle-build/SKILL.md) | Build commands, flags, publishing, troubleshooting |
 | [io-connectors](io-connectors/SKILL.md) | 51+ I/O connectors, testing patterns, usage examples |
+| [developing-new-io-connectors](developing-new-io-connectors/SKILL.md) | A detailed guide on developing new I/O connectors |
 | [java-development](java-development/SKILL.md) | Java SDK development, building, testing, project structure |
 | [license-compliance](license-compliance/SKILL.md) | Apache 2.0 license headers for all new files |
 | [python-development](python-development/SKILL.md) | Python SDK environment setup, testing, building pipelines |

.agent/skills/developing-new-io-connectors/SKILL.md

@@ -343,3 +343,5 @@ Add any necessary documentation for your connector under the `website/www/site/c
 
 > [!TIP]
 > **Canonical Reference Implementations:** When developing a new connector, we highly recommend studying **Apache Iceberg** ([IcebergIO.java](https://github.com/apache/beam/blob/master/sdks/java/io/iceberg/src/main/java/org/apache/beam/sdk/io/iceberg/IcebergIO.java)) and **Delta Lake** ([DeltaIO.java](https://github.com/apache/beam/blob/master/sdks/java/io/delta/src/main/java/org/apache/beam/sdk/io/delta/DeltaIO.java)) as state-of-the-art reference implementations.
+
+For mor details see the [Developing I/O connectors](https://beam.apache.org/documentation/io/developing-io-overview) guide.

.agent/skills/io-connectors/SKILL.md

@@ -189,11 +189,10 @@ Beam supports using I/O connectors from one SDK in another via the expansion ser
 ```
 
 ## Creating New Connectors
-See [Developing I/O connectors](https://beam.apache.org/documentation/io/developing-io-overview)
 
 Key components:
 1. **Source** - Reads data (bounded or unbounded)
 2. **Sink** - Writes data
 3. **Read/Write transforms** - User-facing API
 
-For more detailed information see the [Developing I/O connectors](https://beam.apache.org/documentation/io/developing-io-overview) guide.
+For more detailed information on developing new I/O connectors see the [Developing new I/O connectors SKILL](../developing-new-io-connectors/SKILL.md).