Update debugging section of docs

Author: gregfurman

lambda-debugging-sam-typescript/.vscode/launch.json

@@ -7,11 +7,13 @@
       "request": "attach",
       "address": "127.0.0.1",
       "port": 7050,
-      // Change localRoot to ${workspaceFolder}/hello-world for AWS SAM
-      "localRoot": "${workspaceFolder}/hello-world/dist", 
+      // Change localRoot to ${workspaceFolder}/hello-world/dist for locally built.
+      "localRoot": "${workspaceFolder}/hello-world", 
       "remoteRoot": "/var/task/",
       "outFiles": [
+        // SAM builds:
         "${workspaceFolder}/.aws-sam/build/HelloWorldFunction/**",
+        // Local builds:
         "${workspaceFolder}/hello-world/dist/app.js",
         "${workspaceFolder}/hello-world/dist/app.js.map"
       ],

lambda-debugging-sam-typescript/README.md

@@ -74,9 +74,11 @@ We recommend the one-click setup using the AWS Toolkit for VS Code unless your a
 ### Debugging
 
 1. Open the sample folder in VS Code to auto-detect `.vscode/launch.json`
+    a. If using SAM, ensure `localRoot` is set to `${workspaceFolder}/hello-world`
+    b. If using a local build, ensure `localRoot` is set to `${workspaceFolder}/hello-world/dist`
 2. Set a breakpoint in the handler file `hello-world/app.ts` by clicking in the gutter-margin
 3. Open the **Run and Debug** view in VS Code
-4. Run the **TypeScript: Remote Attach** task
+4. Run the **Node: Remote Attach** task
 5. Run `make invoke` to invoke the Lambda function
 
 ## Troubleshooting