docs: add index.md to markdown links for IDE navigation

docs/getting-started.md

@@ -3,19 +3,19 @@
 
 The fastest way to get to the info you are looking for is **the search bar above**. If that doesn't work, the sidebar has you covered:
 
-* The [API Reference](api-reference/) contains info about openrouteservice's API [endpoints](api-reference/endpoints/) and usage, both for using the [public API](https://openrouteservice.org/dev/#/api-docs) and using locally run instances of openrouteservice.
-  * [Directions](api-reference/endpoints/directions/) endpoint
-  * [Isochrones](api-reference/endpoints/isochrones/) endpoint
-  * [Matrix](api-reference/endpoints/matrix/) endpoint
-  * [Snapping](api-reference/endpoints/snapping/) endpoint _(not available in our live API)_
-  * [Export](api-reference/endpoints/export/) endpoint _(not available in our live API)_
-* [Run ORS instance](run-instance/) contains all info about setting up the ors locally. 
+* The [API Reference](api-reference/index.md) contains info about openrouteservice's API [endpoints](api-reference/endpoints/index.md) and usage, both for using the [public API](https://openrouteservice.org/dev/#/api-docs) and using locally run instances of openrouteservice.
+  * [Directions](api-reference/endpoints/directions/index.md) endpoint
+  * [Isochrones](api-reference/endpoints/isochrones/index.md) endpoint
+  * [Matrix](api-reference/endpoints/matrix/index.md) endpoint
+  * [Snapping](api-reference/endpoints/snapping/index.md) endpoint _(not available in our live API)_
+  * [Export](api-reference/endpoints/export/index.md) endpoint _(not available in our live API)_
+* [Run ORS instance](run-instance/index.md) contains all info about setting up the ors locally. 
   * [System requirements](run-instance/system-requirements)
   * [Data](run-instance/data) used by openrouteservice
-  * [Installation](run-instance/installation/) either directly using [JAR / WAR](run-instance/installation/running-jar-war) artifacts, with [Docker](run-instance/installation/running-with-docker) or [building from source](run-instance/installation/building-from-source)
-  * [Configuration](run-instance/configuration/) of openrouteservice instances
-* [Contributing](contributing/) contains info about contributing to the openrouteservice, the OpenStreetMap and [translations](contributing/contributing-translations)
-* [Technical details](technical-details/) contains all sorts of explanation about the internal workings of the openrouteservice.
+  * [Installation](run-instance/installation/index.md) either directly using [JAR / WAR](run-instance/installation/running-jar-war) artifacts, with [Docker](run-instance/installation/running-with-docker) or [building from source](run-instance/installation/building-from-source)
+  * [Configuration](run-instance/configuration/index.md) of openrouteservice instances
+* [Contributing](contributing/index.md) contains info about contributing to the openrouteservice, the OpenStreetMap and [translations](contributing/contributing-translations)
+* [Technical details](technical-details/index.md) contains all sorts of explanation about the internal workings of the openrouteservice.
 * [FAQ](frequently-asked-questions) contains answers to frequently asked questions.
 
 For a more general overview, visit our website at [openrouteservice.org](https://openrouteservice.org).

docs/run-instance/index.md

@@ -16,6 +16,6 @@ You can then modify the configuration and source file settings to match your nee
 
 ## Installation
 
-Please read the documentation regarding [system requirements](system-requirements) and [data](data) before continuing to properly [install](installation/) your openrouteservice instance.  
+Please read the documentation regarding [system requirements](system-requirements) and [data](data) before continuing to properly [install](installation/index.md) your openrouteservice instance.  
 
-For more information on configuring openrouteservice for your specific needs, see the [configuration](configuration/) documentation.
+For more information on configuring openrouteservice for your specific needs, see the [configuration](configuration/index.md) documentation.