helper-function: fix formatting of bpf_probe_read_user_str.md

[kxxt]

Fix formatting of the code block and some inline codes.

[dylandreimerink]

Thank you for fixing this!

This bit of the docs is actually auto generated from the libbpf headers (see <!-- [HELPER_FUNC_DEF] --> and <!-- [/HELPER_FUNC_DEF] --> markers).

I suggest we remove these markers, so this will not be reverted next time we run the make generate-docs command and take ownership of the definition ourselfs.

[kxxt]

Thank you for fixing this!

This bit of the docs is actually auto generated from the libbpf headers (see <!-- [HELPER_FUNC_DEF] --> and <!-- [/HELPER_FUNC_DEF] --> markers).

I suggest we remove these markers, so this will not be reverted next time we run the make generate-docs command and take ownership of the definition ourselfs.

Thanks for your review! I have removed HELPER_FUNC_DEF marker from the doc.

[dylandreimerink]

Awesome! Thanks for the fix.

It seems that brought the wrath of CI, after fixing that we should be good.