chore(docs): fix warning rendering issue (#1423)

Author: leandrodamascena

docs/core/metrics.md

@@ -322,7 +322,7 @@ The `logMetrics` decorator of the metrics utility can be used when your Lambda h
 You can manually flush the metrics with `publishStoredMetrics` as follows:
 
 !!! warning
-Metrics, dimensions and namespace validation still applies.
+    Metrics, dimensions and namespace validation still applies.
 
 === "handler.ts"
 
@@ -466,4 +466,4 @@ CloudWatch EMF uses the same dimensions across all your metrics. Use `singleMetr
     --8<-- "docs/snippets/metrics/singleMetricDifferentDimsDecorator.ts"
     ```
 
-    1. Binding your handler method allows your handler to access `this` within the class methods.
+    1. Binding your handler method allows your handler to access `this` within the class methods.