Fix documentation links for walkthroughs

Author: filiptronicek

gitpod-web/resources/walkthroughs/getstarted/ports.md

@@ -8,4 +8,4 @@ _Note_: To get back to the list of files in your project, click the "Explorer" i
 
 ## Documentation
 
-To learn more about ports and how to configure them, please [refer to the documentation](https://www.gitpod.io/docs/config-ports).
+To learn more about ports and how to configure them, please [refer to the documentation](https://www.gitpod.io/docs/configure/workspaces/ports).

gitpod-web/resources/walkthroughs/getstarted/prebuilds.md

@@ -8,5 +8,5 @@ By the time you start your next workspace, everything is installed, compiled and
 
 ## Documentation
 
-To learn more and how to enable prebuilds for your project, please [refer to the documentation](https://www.gitpod.io/docs/prebuilds).
+To learn more and how to enable prebuilds for your project, please [refer to the documentation](https://www.gitpod.io/docs/configure/projects/prebuilds).
 

gitpod-web/resources/walkthroughs/getstarted/vscodedesktopsupport.md

@@ -8,4 +8,4 @@ Depending on the version of VS Code you have installed locally, use one of the f
 
 ## Documentation
 
-To learn more about VS Code desktop support, please [refer to the documentation](https://www.gitpod.io/docs/develop/vscode-desktop-support).
+To learn more about VS Code desktop support, please [refer to the documentation](https://www.gitpod.io/docs/references/ides-and-editors/vscode).

gitpod-web/resources/walkthroughs/getstarted/what-is-gitpod.md

@@ -24,7 +24,7 @@ Use the steps on the left side to learn more about the following features:
 
 ## Browser extension
 
-To be most productive with Gitpod, it is best if you [install the browser extension](https://www.gitpod.io/docs/browser-extension). It will add a convenient "Gitpod" button when you look at your repo, an issue or a pull request.
+To be most productive with Gitpod, it is best if you [install the browser extension](https://www.gitpod.io/docs/configure/user-settings/browser-extension). It will add a convenient "Gitpod" button when you look at your repo, an issue or a pull request.
 
 ## Documentation
 

gitpod-web/resources/walkthroughs/getstarted/workspaces.md

@@ -22,4 +22,4 @@ Say you're working on a feature and a team member asks you to review their pull
 
 ## Documentation
 
-To learn more about workspaces, please [refer to the documentation](https://www.gitpod.io/docs/workspaces).
+To learn more about workspaces, please [refer to the documentation](https://www.gitpod.io/docs/introduction/learn-gitpod/one-workspace-per-task).