Add Sync to roadmap (#5745)

## Description of changes

_Summarize the changes made by this PR._

- Improvements & Bug fixes
  - ...
- New functionality
  - ...

## Test plan

_How are these changes tested?_

- [ ] Tests pass locally with `pytest` for python, `yarn test` for js,
`cargo test` for rust

## Migration plan

_Are there any migrations, or any forwards/backwards compatibility
changes needed in order to make sure this change deploys reliably?_

## Observability plan

_What is the plan to instrument and monitor this change?_

## Documentation Changes

_Are all docstrings for user-facing APIs updated if required? Do we need
to make documentation changes in the [docs
section](https://github.com/chroma-core/chroma/tree/main/docs/docs.trychroma.com)?_

Author: kylediaz

docs/docs.trychroma.com/markdoc/content/docs/overview/roadmap.md

@@ -21,6 +21,7 @@ Features like:
 - The new [Chroma CLI](https://www.youtube.com/watch?v=lHassGpmvK8) that lets you browse your collections locally, manage your Chroma Cloud DBs, and more!
 - [Chroma Cloud](https://www.trychroma.com/cloud)!
 - [Package Search MCP](https://www.trychroma.com/package-search) - Allow your coding agent to search and understand the source code of thousands of dependencies from npm, pypi and crates.
+- [Github Sync](https://www.trychroma.com/changelog/introducing-chroma-sync) - Chroma can handle ingesting, parsing, chunking, and embedding your codebase.
 
 ## What will Chroma prioritize over the next 6mo?