Fix imports @logging after upgrade (#479)

Fix import statements

Author: drissamri

docs/core/logging.md

@@ -88,8 +88,8 @@ to customise what is logged.
     ```java hl_lines="14"
     import org.apache.logging.log4j.LogManager;
     import org.apache.logging.log4j.Logger;
-    import software.amazon.lambda.logging.LoggingUtils;
-    import software.amazon.lambda.logging.Logging;
+    import software.amazon.lambda.powertools.logging.LoggingUtils;
+    import software.amazon.lambda.powertools.logging.Logging;
     ...
 
     /**
@@ -416,4 +416,4 @@ via `samplingRate` attribute on annotation.
             Environment:
                 Variables:
                     POWERTOOLS_LOGGER_SAMPLE_RATE: 0.5
-    ```
+    ```