[web] Video tutorial content file renamed to index.md.

Underscore _index.md(s) are for sections not for pages.

web/content/docs/tutorials/_index.md

@@ -3,8 +3,9 @@ title = "Tutorials"
 layout = "gallery"
 
 [cascade]
-breadcrumbs = true
+breadcrumbs = false
 sort_alphabetically = true
+collapsed = false
 
 [menu.docs]
 name = "Tutorials"
@@ -14,4 +15,4 @@ url = "./tutorials"
 post = "Learning-by-doing way of gaining experience with OGS and tools commonly used with it."
 [menu.docs.params]
 category = "Beginner"
-+++
++++
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web/content/docs/tutorials/video-tutorial/_index.md → web/content/docs/tutorials/video-tutorial/index.md

 +++
 date = "2018-02-27T11:00:13+01:00"
 title = "Video Tutorial"
-layout = "gallery"
 author = "Dominik Kern"
 weight = 1
 image = "video_tutorial_thumbnail.png"
-featured = true
 +++
 
 In this [three-part tutorial](https://www.youtube.com/watch?v=BULunRJQRJ0&list=PLU_clTnZqNAeOXENl79kQwn0pgHGittX1) we look at the mechanical deformation of a sedimentary basin under an advancing glacier. In detail we show you a possibility how to
@@ -42,19 +40,22 @@ As a common programming language we use [Python](https://www.python.org).
 * [msh2vtu](https://gitlab.opengeosys.org/ogs/tools/ogstools) *-now integrated in ogstools*
 * *Transient hydrodynamics within intercratonic sedimentary basins during glacial cycles*, V. F. Bense  M. A. Person, DOI: [10.1029/2007JF000969](https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2007JF000969)
 
-**_NOTE:_**  Due to ongoing development, msh2vtu.py was integrated in the ogs-repository for [ogstools](https://gitlab.opengeosys.org/ogs/tools/ogstools). 
+***NOTE:***  Due to ongoing development, msh2vtu.py was integrated in the ogs-repository for [ogstools](https://gitlab.opengeosys.org/ogs/tools/ogstools).
 In order to work with the tutorial and apply msh2vtu on mesh_basin.msh, ogstools need to be installed at first.
 
-ogstools can be installed from PyPI using pip. 
-It is recommended to set up a virtual environment beforehand: 
+ogstools can be installed from PyPI using pip.
+It is recommended to set up a virtual environment beforehand:
+
 ```bash
 python -m venv .venv
 source .venv/bin/activate
 pip install ogstools
 ```
+
 More detailed information about the usages and development of ogstools can be found in [ogstools Documentation](https://ogs.ogs.xyz/tools/ogstools/index.html).
-After installation the tool can be applied as described in the first video-tutorial. 
+After installation the tool can be applied as described in the first video-tutorial.
 To apply msh2vtu on the mesh_basin.msh the command should look like:
+
 ```bash
 msh2vtu --ogs --rdcd mesh_basin.msh
-```
+```
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