chore: update contribution details

Author: hansemannn

website/pages/contribute.md

@@ -2,13 +2,9 @@
 
 In order to contribute code, docs, modules, etc to the TiDev project, you are required to sign-and-complete a copy of the TiDev CLA.
 
-You can review the latest version of the CLA on our organization-docs Github repository here:
-[https://github.com/tidev/organization-docs/blob/main/CONTRIBUTOR_CLA.pdf](https://github.com/tidev/organization-docs/blob/main/CONTRIBUTOR_CLA.pdf).
-
 Here's our process for accepting a signed CLA:
 
- 1. Contact Josh Lambert either via [TiSlack](https://tidev.slack.com) or via email ([[email protected]](mailto:[email protected])) and request an e-sign link containing the CLA. Make sure you include the email address in your message that you want to receive the e-sign request!
- 2. Complete the e-sign link when it arrives in your email from the TiDev Docusign account.
+ 1. Use our [Contribution Portal](https://tidev.io/contribute) to sign the CLA
  3. Your name will appear in the contributor list within 5 business days, at which point, you'll be eligible to submit code and other IP to the TiDev project.
 
 Contributor list: [https://github.com/tidev/organization-docs/blob/main/AUTHORIZED_CONTRIBUTORS.md](https://github.com/tidev/organization-docs/blob/main/AUTHORIZED_CONTRIBUTORS.md)