docs: update documentation to use code snippets consistently

Author: matteofigus

docs/features/metrics.md

@@ -509,38 +509,8 @@ You can create multiple dimension sets for your metrics using the `addDimensions
 
 === "Creating multiple dimension sets"
 
-    ```typescript
-    import { Metrics, MetricUnit } from '@aws-lambda-powertools/metrics';
-    
-    const metrics = new Metrics({
-      namespace: 'serverlessAirline',
-      serviceName: 'orders',
-      defaultDimensions: { environment: 'prod' }
-    });
-    
-    export const handler = async () => {
-      // Add a single dimension to the default dimension set
-      metrics.addDimension('region', 'us-west-2');
-      
-      // Add a new dimension set
-      metrics.addDimensions({
-        dimension1: "1",
-        dimension2: "2"
-      });
-      
-      // Add another dimension set (addDimensionSet is an alias for addDimensions)
-      metrics.addDimensionSet({
-        feature: "booking",
-        version: "v1"
-      });
-      
-      // This will create three dimension sets in the EMF output:
-      // [["service", "environment", "region"]], 
-      // [["service", "dimension1", "dimension2"]], and
-      // [["service", "feature", "version"]]
-      metrics.addMetric('successfulBooking', MetricUnit.Count, 1);
-      metrics.publishStoredMetrics();
-    };
+    ```typescript hl_lines="10-25"
+    --8<-- "examples/snippets/metrics/multiDimensionSets.ts"
     ```
 
 === "Example CloudWatch Logs excerpt"

examples/snippets/metrics/multiDimensionSets.ts

@@ -22,10 +22,7 @@ export const handler = async () => {
     version: 'v1',
   });
 
-  // This will create three dimension sets in the EMF output:
-  // [["service", "environment", "region"]],
-  // [["service", "dimension1", "dimension2"]], and
-  // [["service", "feature", "version"]]
+  // This will create three dimension sets in the EMF output
   metrics.addMetric('successfulBooking', MetricUnit.Count, 1);
   metrics.publishStoredMetrics();
 };