add algorithms to index

Signed-off-by: Martijn Govers <Martijn.Govers@Alliander.com>

Author: mgovers

docs/index.md

@@ -32,15 +32,15 @@ Do you wish to be updated on the latest news and releases? Subscribe to the Powe
 
 You can directly install the package from PyPI.
 
-```
+```sh
 pip install power-grid-model
 ```
 
 ## Install from Conda
 
 If you are using `conda`, you can directly install the package from `conda-forge` channel.
 
-```
+```sh
 conda install -c conda-forge power-grid-model
 ```
 
@@ -74,6 +74,7 @@ user_manual/data-validator
 user_manual/model-validation
 user_manual/serialization
 ```
+
 ```{toctree}
 :caption: "API Reference"
 :maxdepth: 2
@@ -102,7 +103,9 @@ advanced_documentation/build-guide
 advanced_documentation/c-api
 advanced_documentation/core-design
 advanced_documentation/python-wrapper-design
+advanced_documentation/algorithms/index.md
 ```
+
 ```{toctree}
 :caption: "Contribution"
 :maxdepth: 2
@@ -111,6 +114,7 @@ contribution/CONTRIBUTING.md
 contribution/folder-structure.md
 contribution/GOVERNANCE.md
 ```
+
 ```{toctree}
 :caption: "Release and Support"
 :maxdepth: 2