Rename snippets according to docusaurus best practices

[smol-ninja]

I suggest renaming the snippets from CamelCase to _lower-case.

According to the docusaurus, using _ prefix avoids creating any doc page for snippets and marks it as "partial" to be imported by other files. Also, the plugin I am using to address #336 assumes snippets to follow _lower-case naming convention to work properly.

When this convention is used, LLM-ready markdown files will have snippets content directly embedded into the root markdown files.

@PaulRBerg since you added these snippets, was there any particular reason why you renamed them in CamelCase whereas all the other markdown files follow lower-case naming convention?

[PaulRBerg]

No, no particular reason for naming them like that

Happy to rename them as you suggest - good finding

Let's do this after #308

[smol-ninja]

When do we plan to merge that PR? :))

[PaulRBerg]

haha yeah it's been a while in the making!

think it's ready to merge now - @razgraf, @gavriliumircea could you please given the final approval? I've hidden the "Query Syntax" section as discussed on Slack.