style: format code with Autopep8, Black, ClangFormat, dotnet-format, Go fmt, Gofumpt, isort, PHP CS Fixer, Prettier, RuboCop, Rustfmt, Scalafmt, StandardJS, StandardRB and Yapf

This commit fixes the style issues introduced in 4a0512b according to the output
from Autopep8, Black, ClangFormat, dotnet-format, Go fmt, Gofumpt, isort, PHP CS
Fixer, Prettier, RuboCop, Rustfmt, Scalafmt, StandardJS, StandardRB and Yapf.

Details: #30

Author: deepsource-autofix[bot]

README.md

@@ -163,7 +163,6 @@ Join us at [Discord](https://discord.gg/4ndeMBx3)
 
 ## Tutorials:
 
-
 To implement a recommendation system using AI algorithms, we can use collaborative filtering, which analyzes user behavior and preferences to generate personalized recommendations. Here's a sample code that demonstrates how to provide service recommendations to users based on their preferences and past interactions:
 
 ```python