docs: typo for serverless framework (#1701)

* fix: typo for serverless framework

According to the docs it should be {aws:region}

* fix: use correct serverless framework variable syntax

* fix: use latest layer version in docs

Author: HaaLeo

.github/scripts/update_layer_arn.sh

@@ -56,7 +56,7 @@ for file in $files; do
     # arn:aws:lambda:{env.region}:094274105915:layer:AWSLambdaPowertoolsTypeScript:39
     if [[ "$line" == *"eu-central-1"* ]]; then
       # These are all the framework pseudo parameters currently found in the docs
-      for pseudo_region in '{region}' '${AWS::Region}' '${aws::region}' '{aws::region}' '{env.region}' '${cdk.Stack.of(this).region}' '${aws.getRegionOutput().name}'; do
+      for pseudo_region in '{region}' '${AWS::Region}' '${aws:region}' '{aws::region}' '{env.region}' '${cdk.Stack.of(this).region}' '${aws.getRegionOutput().name}'; do
         prefix_pseudo_region=$(echo "$prefix" | sed "s/eu-central-1/${pseudo_region}/")
         # prefix_pseudo_region = arn:aws:lambda:${AWS::Region}:094274105915:layer:AWSLambdaPowertoolsTypeScript
 

docs/index.md

@@ -108,7 +108,7 @@ You can include Powertools for AWS Lambda (TypeScript) Lambda Layer using [AWS L
           hello:
             handler: lambda_function.lambda_handler
             layers:
-              - arn:aws:lambda:${aws::region}:094274105915:layer:AWSLambdaPowertoolsTypeScript:20
+              - arn:aws:lambda:${aws:region}:094274105915:layer:AWSLambdaPowertoolsTypeScript:20
         ```
 
         If you use `esbuild` to bundle your code, make sure to exclude `@aws-lambda-powertools` from being bundled since the packages will be already present the Layer: