docs: updates CODE_OF_CONDUCT to CNCF (#45)

Signed-off-by: Jennifer Power <[email protected]>

CONTRIBUTING.md

@@ -13,8 +13,6 @@ Before embarking on a more ambitious contribution, please quickly [get in touch]
 requires extensive rework (by you or by us), sits in backlog for a long time, or
 cannot be accepted at all!**
 
-We have also adopted [Contributor Covenant Code of Conduct](https://oscal-compass.github.io/compliance-trestle/mkdocs_code_of_conduct/).
-
 ### Proposing new features
 
 If you would like to implement a new feature, please [raise an issue](https://github.com/oscal-compass/compliance-trestle-fedramp/issues)

README.md

@@ -18,7 +18,7 @@ Compliance trestle fedramp is currently in beta. The expectation is that in ongo
 
 ## Contributing to Trestle-fedramp
 
-Our project welcomes external contributions. Please consult [contributing](CONTRIBUTING.md) to get started.
+Our project welcomes external contributions. Please refer to the [Contributing guide](CONTRIBUTING.md) and the [Code of Conduct](https://github.com/oscal-compass/community/blob/main/CODE_OF_CONDUCT.md) for more information on how to contribute.
 
 ## License & Authors