Documentation

Remove the assumptions about the knowledge of other programming languages or technologies from the tutorial section.

The tutorial section should as accessible as possible, aiming especially at the beginners.
For some of them python is their first introduction to the world of technology itself.

Linked PRs

• gh-107017: removed mention that C does it the same way #107020
• gh-107017: Analolgy to Pascal and C replaced. #107025
• [3.12] gh-107017: removed mention that C does it the same way (GH-107020) #107097
• [3.11] gh-107017: removed mention that C does it the same way (GH-107020) #107098
• gh-107017: Change Chapter Strings to Texts in the Introduction chapter. #107104
• [3.11] gh-107017: Analolgy to Pascal and C replaced. (GH-107025) #107123
• [3.12] gh-107017: Analolgy to Pascal and C replaced. (GH-107025) #107124
• gh-107017: Rework the Fibonacci example #107132
• [3.12] gh-107017: Change Chapter Strings to Texts in the Introduction chapter. (GH-107104) #107167
• [3.11] gh-107017: Change Chapter Strings to Texts in the Introduction chapter. (GH-107104) #107168