[docs]: correct the links to fix the Page not found issue.

adresses gitpod-io/website#842

Author: nisarhassan12

src/docs/bitbucket-integration.md

@@ -8,6 +8,6 @@ To start a workspace from a Bitbucket project, prefix the Bitbucket URL with `gi
 
 ## Enabling Prebuilds
 
-To enable [prebuilt workspaces](/docs/prebuilds/) for your Bitbucket project you need to grant `install webhooks` in Gitpod's [Access Control](/access-control/) page. This allows Gitpod to install a webhook. The webhook creates a new prebuild for every push event.
+To enable [prebuilt workspaces](/docs/prebuilds/) for your Bitbucket project you need to grant `install webhooks` in Gitpod's [Access Control](https://gitpod.io/access-control/) page. This allows Gitpod to install a webhook. The webhook creates a new prebuild for every push event.
 
 The webhook will be automatically installed when you trigger the first prebuild manually. For this, prefix your Bitbucket project URL with `gitpod.io/#prebuild/` as described in the [prebuilds page](/docs/prebuilds/#on-gitlab-and-bitbucket).

src/docs/gitlab-integration.md

@@ -12,7 +12,7 @@ To launch new Gitpod workspaces for issues, branches, specific commits, etc. you
 
 ## Enabling Prebuilds
 
-To enable [prebuilt workspaces](/docs/prebuilds/) for your GitLab project you need to grant `allow api calls` in Gitpod's [Access Control](/access-control/) page. This allows Gitpod to install a webhook. The webhook creates a new prebuild for every push event.
+To enable [prebuilt workspaces](/docs/prebuilds/) for your GitLab project you need to grant `allow api calls` in Gitpod's [Access Control](https://gitpod.io/access-control/) page. This allows Gitpod to install a webhook. The webhook creates a new prebuild for every push event.
 
 The webhook will be automatically installed when you trigger the first prebuild manually. For this, prefix your GitLab project URL with `gitpod.io/#prebuild/` as described in the [prebuilds page](/docs/prebuilds/#on-gitlab-and-bitbucket).
 
@@ -46,4 +46,4 @@ Here's how to do that:
 
 Congrats you have setup the GitLab integration. 🎉
 
-Next up you should install the browser extension and [configure it with your Gitpod installation URL](/docs/browser-extension/#use-with-gitpod-self-hosted).
+Next up you should install the browser extension and [configure it with your Gitpod installation URL](/docs/browser-extension/#use-with-gitpod-self-hosted).

src/docs/languages/dart.md

@@ -12,7 +12,7 @@ Here are a few Dart example projects that are already automated with Gitpod:
 
 ## Installing Dart
 
-To install the Dart SDK in Gitpod one must add the following to your [.gitpod.Dockerfile](https://gitpod.io/docs/config-docker)
+To install the Dart SDK in Gitpod one must add the following to your [.gitpod.Dockerfile](/docs/config-docker)
 
 ```Dockerfile
 RUN brew tap dart-lang/dart && brew install dart

src/docs/languages/java.md

@@ -128,7 +128,7 @@ Gitpod comes equipped with the following VS Code extensions:
  - [Debugger for Java](https://marketplace.visualstudio.com/items?itemName=vscjava.vscode-java-debug)
  - [Java Dependency Viewer](https://marketplace.visualstudio.com/items?itemName=vscjava.vscode-java-dependency)
 
-You can [install additional extensions](/docs/vscode_extensions/) for your project if you want.
+You can [install additional extensions](/docs/vscode-extensions/) for your project if you want.
 
 Most of the information you find in the [Java for VS Code](https://code.visualstudio.com/docs/languages/java) documentation applies to Gitpod as well.