chore: updated docs

Author: dreamorosi

docs/core/logger.md

@@ -156,8 +156,11 @@ Key | Example
     }
 
     export const myFunction = new Lambda();
-    export const handler = myFunction.handler;
+    export const handler = myFunction.handler.bind(myFunction); // (1)
     ```
+
+    1. Binding your handler method allows your handler to access `this` within the class methods.
+
 === "Manual"
 
     ```typescript hl_lines="7"
@@ -234,9 +237,11 @@ This is disabled by default to prevent sensitive info being logged
     }
 
     export const myFunction = new Lambda();
-    export const handler = myFunction.handler;
+    export const handler = myFunction.handler.bind(myFunction); // (1)
     ```
 
+    1. Binding your handler method allows your handler to access `this` within the class methods.
+
 ### Appending persistent additional log keys and values
 
 You can append additional persistent keys and values in the logs generated during a Lambda invocation using either mechanism:
@@ -399,9 +404,11 @@ If you want to make sure that persistent attributes added **inside the handler f
     }
 
     export const myFunction = new Lambda();
-    export const handler = myFunction.handler;
+    export const handler = myFunction.handler.bind(myFunction); // (1)
     ```
 
+    1. Binding your handler method allows your handler to access `this` within the class methods.
+
 In each case, the printed log will look like this:
 
 === "First invocation"