docs: improve wording, added links, ...

This MR introduces:

• improve cloud documentation
  • wording
  • links
  • others...

network/README.md

 # Networking
 
-For the networking in Cloud2 metacentrum we need to distinguish two different scenarios, the personal project and group project. Due to the fact that a personal projects are meant for getting to know the environment not for production ready services.
+For the networking in Cloud2 metacentrum we need to distinguish following scenarios
+* personal project
+* group project.
 
 
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