[chore][processor/logdeduplication] Add README header (#34488)

**Description:** <Describe what has changed.>
<!--Ex. Fixing a bug - Describe the bug and how this fixes the issue.
Ex. Adding a feature - Explain what this achieves.-->
I noticed in the PR introducing this component that the README was
missing the generic header that all other components have. This is added
by `mdatagen` when the README has the `<!-- status autogenerated section
-->` and `<!-- end autogenerated section -->` lines included.

I also removed the section about supported pipelines, as the added
header should make this clear enough.

**Link to tracking Issue:** <Issue number if applicable>

#34118

processor/logdeduplicationprocessor/README.md

@@ -1,8 +1,17 @@
 # Log DeDuplication Processor
-This processor is used to deduplicate logs by detecting identical logs over a range of time and emitting a single log with the count of logs that were deduplicated.
 
-## Supported pipelines
-- Logs
+<!-- status autogenerated section -->
+| Status        |           |
+| ------------- |-----------|
+| Stability     | [development]: logs   |
+| Distributions | [] |
+| Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Aprocessor%2Flogdeduplication%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Aprocessor%2Flogdeduplication) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Aprocessor%2Flogdeduplication%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Aprocessor%2Flogdeduplication) |
+| [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@BinaryFissionGames](https://www.github.com/BinaryFissionGames), [@MikeGoldsmith](https://www.github.com/MikeGoldsmith), [@djaglowski](https://www.github.com/djaglowski) |
+
+[development]: https://github.com/open-telemetry/opentelemetry-collector#development
+<!-- end autogenerated section -->
+
+This processor is used to deduplicate logs by detecting identical logs over a range of time and emitting a single log with the count of logs that were deduplicated.
 
 ## How It Works
 1. The user configures the log deduplication processor in the desired logs pipeline.