fix: broken links in contribution guide (risc0#1430)

I've found outdated/broken links in website [contribution
guide](https://dev.risczero.com/contributors-guide). Links are referring
to legacy dedicated website repo, but currently the website is part of
main repo. This PR fixes the isssue.

Co-authored-by: Erik Kaneda <[email protected]>
Co-authored-by: morgangibbs87 <[email protected]>
Co-authored-by: Frank Laub <[email protected]>

website/docs/contributors-guide.md

@@ -1,11 +1,11 @@
 # Contributor's Guide
 
-_This page describes guidelines for community contributions to this [website](https://www.github.com/risc0/website); you may also be interested in contributing to the [main project codebase](https://github.com/risc0/risc0)._
+_This page describes guidelines for community contributions to this [website](https://github.com/risc0/risc0/tree/main/website); you may also be interested in contributing to the [main project codebase](https://github.com/risc0/risc0)._
 
 > `RISC Zero welcomes community participation!`
 >
-> - Make suggestions or report bugs via [GitHub issues](https://github.com/risc0/website/issues)
-> - Contribute website content or give feedback on [open pull requests](https://github.com/risc0/website/pulls)
+> - Make suggestions or report bugs via [GitHub issues](https://github.com/risc0/risc0/issues)
+> - Contribute website content or give feedback on [open pull requests](https://github.com/risc0/risc0/pulls)
 > - Contribute to the [main zkVM project](https://github.com/risc0/risc0)
 > - Contribute to our tutorials and how-to guides for our [templates](https://github.com/risc0/risc0/tree/main/templates) and [Rust examples](https://github.com/risc0/risc0/tree/v0.18.0/examples)
 > - Ask questions on [Discord](https://discord.gg/risczero)
@@ -14,7 +14,7 @@ _This page describes guidelines for community contributions to this [website](ht
 
 - All changes to this website are managed through GitHub pull requests, so you'll need a [GitHub Account](https://github.com) to contribute.
 - You can suggest an edit directly via the `Edit this Page` button at the bottom of each page.
-- To create a new page, you can use the [GitHub browser interface](https://www.github.com/risc0/website); the content is in `src/pages` and `docs`.
+- To create a new page, you can use the [GitHub browser interface](https://github.com/risc0/risc0/tree/main/website); the content is in `src/pages` and `docs`.
   - Please read about [the navbar and sidebars](./contributors-guide.md#navbar-and-sidebars) and [categories of documentation](./contributors-guide.md#categories-of-documentation) before creating a new page.
 - If you want to clone the repository and work locally, you may want to check out the [Docusaurus documentation](https://docusaurus.io/docs/installation).
   We like to use `yarn start` to run a local build, especially when we're working with changes that involve links or sidebars.
@@ -40,7 +40,7 @@ In order to achieve this objective, we rely on:
 [`RISC Zero Official Terminology`](./terminology.md)
 
 Our terminology and naming conventions are subject to ongoing evaluation, and we encourage conversation and questions on these topics.
-Please let us know via a [`GitHub issue`](https://github.com/risc0/website/issues) when you encounter terms that don't seem quite right.
+Please let us know via a [`GitHub issue`](https://github.com/risc0/risc0/issues) when you encounter terms that don't seem quite right.
 
 ## Navbar and Sidebars
 
@@ -65,7 +65,7 @@ We typically organize reference docs according to the following sections; we use
 > - Content 3
 > - Suggested Reading
 
-_Changes to this organization can be proposed for discussion via a [GitHub issue](https://github.com/risc0/website/issues) or proposed for action via a PR on this page._
+_Changes to this organization can be proposed for discussion via a [GitHub issue](https://github.com/risc0/risc0/issues) or proposed for action via a PR on this page._
 
 ### Explainer Docs