Improve articles: summary, tags and some code syntax highlight

[ctmbl]

Few updates that comes from the desire of fixing Turtyo's post summary:

• fix turtyo's summary
• homogenize tags
• imrpove xlitoni's summary
• fix turtyo's code blocks syntax highlight

[Turtyo]

Why is the text under my WU "Simple tutorial to discord bots using discord.py" ? I think it got mixed with the second blog post

[ctmbl]

Why is the text under my WU "Simple tutorial to discord bots using discord.py" ? I think it got mixed with the second blog post

That was exactly my point see the first sentence of the PR comment :wink:

Tks for the approval btw!

[Turtyo]

That was exactly my point see the first sentence of the PR comment 😉

Oh that was the "before" not the "after", i see