Outlier filter documentation added

doc/ApplyingDataFilters.md

@@ -1,4 +1,4 @@
-| [Tutorials Home](index.md) | [Previous](DataFilters.md) | [Next](ICPIntro.md) |
+| [Tutorials Home](index.md) | [Previous](DataFilters.md) | [Next](OutlierFiltersFamilies.md) |
 | :--- | :---: | ---: |
 
 # Applying Data Point Filters

doc/ICPIntro.md

@@ -1,4 +1,4 @@
-| [Tutorials Home](index.md) | [Previous](ApplyingDataFilters.md) | [Next](DefaultICPConfig.md) |
+| [Tutorials Home](index.md) | [Previous](OutlierFiltersFamilies.md) | [Next](DefaultICPConfig.md) |
 | :--- | :---: | ---: |
 
 # An Introduction to ICP Registration

doc/index.md

@@ -22,6 +22,7 @@ Beginner<a name="beginner"></a>
 - [What can I do with libpointmatcher?](ApplicationsAndPub.md)
 - [What the different data filters do?](DataFilters.md)
 - [Example: Applying a chain of data filters](ApplyingDataFilters.md)
+- [What are the different outlier filters families?](OutlierFiltersFamilies.md)
 - [Example: An introduction to ICP](ICPIntro.md)
 - [The ICP chain configuration and its variants](DefaultICPConfig.md)
 - [Configuring libpointmatcher using YAML](Configuration.md)