chore: updated contributing & docs with SAM

Author: dreamorosi

CONTRIBUTING.md

@@ -225,7 +225,7 @@ To test your updates with these examples, you just have to:
     sam deploy --guided
     ```
 
-The last command will deploy AWS resources, therefore, you will need an AWS account, and it might incur some costs which should be covered by the [AWS Free Tier](https://aws.amazon.com/free/?all-free-tier.sort-by=item.additionalFields.SortRank&all-free-tier.sort-order=asc&awsf.Free%20Tier%20Types=*all&awsf.Free%20Tier%20Categories=*all). If you don't have an AWS Account, follow [these instructions to create one](https://aws.amazon.com/premiumsupport/knowledge-center/create-and-activate-aws-account/).
+The last step will deploy AWS resources, therefore, you will need an AWS account, and it might incur some costs which should be covered by the [AWS Free Tier](https://aws.amazon.com/free/?all-free-tier.sort-by=item.additionalFields.SortRank&all-free-tier.sort-order=asc&awsf.Free%20Tier%20Types=*all&awsf.Free%20Tier%20Categories=*all). If you don't have an AWS Account, follow [these instructions to create one](https://aws.amazon.com/premiumsupport/knowledge-center/create-and-activate-aws-account/).
 
 ### Local documentation