Update README.md

Improved text readability.

Author: 4IceG

README.md

@@ -52,6 +52,9 @@ Not tested devices (Not all data can be shown and scripts need to be corrected):
 
 ### <img src="https://raw.githubusercontent.com/4IceG/Personal_data/master/dooffy_design_icons_EU_flags_United_Kingdom.png" height="24"> Installation / <img src="https://raw.githubusercontent.com/4IceG/Personal_data/master/dooffy_design_icons_EU_flags_Poland.png" height="24"> Instalacja
 
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+   <summary>Pokaż | Show me</summary>
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 #### Package dependencies for conventional modems.
 Modem drivers are required for proper operation.
 ``` bash
@@ -133,8 +136,14 @@ opkg install luci-app-3ginfo-lite
 
 For images downloaded from eko.one.pl.
 Installation procedure is similar, only there is no need to manually download the sms-tool package.
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+</details>
 
 ### <img src="https://raw.githubusercontent.com/4IceG/Personal_data/master/dooffy_design_icons_EU_flags_United_Kingdom.png" height="24"> User compilation / <img src="https://raw.githubusercontent.com/4IceG/Personal_data/master/dooffy_design_icons_EU_flags_Poland.png" height="24"> Kompilacja przez użytkownika
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+<details>
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 ``` bash
 #The package can be added to Openwrt sources in two ways:
 
@@ -160,7 +169,7 @@ packages/luci-app-3ginfo-lite/Makefile
 #Then you can compile the packages one by one, an example command:
 make V=s -j1 feeds/luci/applications/luci-app-3ginfo-lite/compile
 ```
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+</details>
 
 ### <img src="https://raw.githubusercontent.com/4IceG/Personal_data/master/dooffy_design_icons_EU_flags_United_Kingdom.png" height="24"> Preview / <img src="https://raw.githubusercontent.com/4IceG/Personal_data/master/dooffy_design_icons_EU_flags_Poland.png" height="24"> Podgląd