Updated [CZ] Instalace (markdown)

[CZ]-Instalace.md

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 **Tohle je krátký tutoriál, jak nainstalovat TS-website 2.0**
 
 ### Požadavky
-<details><summary>Show / hide</summary>
+<details><summary>Zobraz / skryj</summary>
 
 #### General:
 - A web server, shared hosting or dedicated server running Apache or nginx
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 ### How to install TS-website 2 - in short
-<details><summary>Show / hide</summary>
+<details><summary>Zobraz / skryj</summary>
 
 1. Download the latest version from the [releases page](https://github.com/Wruczek/ts-website/releases)
 2. Unzip it
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 ### Version for dummies - step by step with commands
-<details><summary>Show / hide</summary>
+<details><summary>Zobraz / skryj</summary>
 
 This is a simple tutorial with commands for dummies. 
 
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 ### Assigner config format
-<details><summary>Show / hide</summary>
+<details><summary>Zobraz / skryj</summary>
 Until the admin panel is released, use this as a template example for the assigner:
 
 ```json