[3.5.] [4.4] any information about "LTS"

[math-GH]

In version 3.5 and 4.4 are no information what it means "LTS"

In my opinion there should be some short information in chapter Introduction:
"it is a LTS version (long term support). This version is supported by bugfixes from Juni 2017 till June 2020 and by a extended support till June 2021 (only security fixes)".
A link to the release plan page is also helpful to understand the LTS releases: https://contao.org/de/release-plan.html