fix(documentation): Fix some broken links in the index.md (#214)

Signed-off-by: Alexander Dahmen <alexander.dahmen@inovex.de>

Author: Fyusel

docs/_index.md

@@ -6,7 +6,7 @@ layout: package
 
 <div align="center">
 <br>
-<img src=".github/images/stackit-logo.svg" alt="STACKIT logo" width="50%"/>
+<img src="https://raw.githubusercontent.com/stackitcloud/pulumi-stackit/refs/heads/main/.github/images/stackit-logo.svg" alt="STACKIT logo" width="50%"/>
 <br>
 <br>
 </div>
@@ -34,7 +34,7 @@ Apache 2.0
 > [!NOTE]
 > Currently only the npm package is available via the mentioned packages managers but the other ones can be installed locally by using the generated sdks directly.
 > Keep in mind that this is in ALPHA state and only the Resource Manager and IaaS service for Node.js is supported.
-> E.g. in order to create and install the TypeScript SDK you can use the following [guide](./examples/ts/README.md).
+> E.g. in order to create and install the TypeScript SDK you can use the following [guide](https://github.com/stackitcloud/pulumi-stackit/blob/main/examples/ts/README.md).
 
 ### Node.js (JavaScript/TypeScript)
 
@@ -69,10 +69,10 @@ const exampleWithName = new stackit.Network("example_with_name", {
 {{% /choosable %}}
 {{< /chooser >}}
 
-For more examples, please have a look at the [Examples](./examples/).
+For more examples, please have a look at the [Examples](https://github.com/stackitcloud/pulumi-stackit/blob/main/examples).
 
-A detailed authentication guide, information on how to use beta and experimental resources, and available configuration options can be found under [Installation Configuration](./docs/installation-configuration.md).
+A detailed authentication guide, information on how to use beta and experimental resources, and available configuration options can be found under [Installation Configuration](./installation-configuration).
 
 ## Reference
 
-For detailed reference documentation, please visit [the Pulumi registry](https://www.pulumi.com/registry/packages/stackit/api-docs/).
+For detailed reference documentation, please visit [the Pulumi registry](./api-docs/).