Update CONTRIBUTING.md (#2014)

Update link to the component proposal Issue template

Co-authored-by: Mike Perrotti <mperrotti@github.com>

Author: josepmartins

contributor-docs/CONTRIBUTING.md

@@ -33,7 +33,7 @@ A common question asked about Primer Components is how to know what should be ad
 
 - Does the proposed component get used in more than one or two places across GitHub UI? A component that's only meant to be used in one place and doesn't have potential to be reused in many places probably should exist as a local component. An example of something like this might be a component that renders content specific to a single GitHub product.
 
-**In general, we tend to be pretty excited about 99% of feature proposals and contributions!** If you would like to get started with a component proposal, open an issue using the [component proposal template](https://github.com/primer/react/issues/new?template=new-component-proposal.md).
+**In general, we tend to be pretty excited about 99% of feature proposals and contributions!** If you would like to get started with a component proposal, open an issue using the [component proposal template](https://github.com/primer/react/issues/new?template=new_component_proposal_template.md).
 
 ## Discussing non-public features or products