After the docs UI redesign `h2` tags got a border top.
`border-top: 1px solid #dbdbdb;`;
In the sections of Getting Started guide in order to separate
`What's next` from above content an `<hr />` tag was used,
that now becomes unnecessary.
This commit removes unnecessary `<hr />` tags.
PR Close#40693
The removed bit was copied and pasted from a previous section. Not relevent for the particular step of the tutorial.
The removed bit can we found as intended in __Adding Navigation__ section.
PR Close#40812
In "Getting started" guide pipes are not intoduced anywhere but are used in the guide.
Added refrence to pipes for better consistency in the tutorial.
Fixes#36375
PR Close#36584