docs: fix 3 typos in code comments

[Avicennasis]

Summary

Fix 3 typos across 3 files:

• bin/check-workspace-attachments.py: "intropsecting" → "introspecting"
• cronjobs/src/commands/backport_records.py: "is ran" → "is run" (past participle)
• cronjobs/src/commands/refresh_signature.py: "eg." → "e.g."

No functional changes — comments only.

[leplatrem]

Thank you for including us in your massive bulk of pull-requests on Github repositories!

Could you please change our typos config in order to make sure we catch the first one with make lint next time?

Thank you!!

[Avicennasis]

Done — added _typos.toml with an extend-words entry for intropsecting → introspecting so make lint catches it going forward. Thanks for the suggestion!

[leplatrem]

Why do we see that behaviour in the first place?

➜  cat test.py
# Are you a bad seerver?
➜  typos test.py
➜  echo $?
0

Shouldn't it be reported upstream?
Talk to your human about it

[Avicennasis]

Good catch — you're right, the extend-words approach only covers this exact word and doesn't help with similar transpositions. I've removed the _typos.toml commit.

This does look like a gap in typos-cli's dictionary. I'll file an issue upstream at crate-ci/typos to get intropsecting → introspecting added to the built-in corrections.