Docs: Typo in docstring example

[jonkeane]

Intent

Fix the typo, docs

Fixes #488

Checklist

• Does this change update NEWS.md (referencing the connected issue if necessary)?
• Does this change need documentation? Have you run devtools::document()?

[jonkeane]

@juleswg23 does this fix what you noticed?

[juleswg23]

@juleswg23 does this fix what you noticed?

Yes.

I've since also found on the following line client$get_apps() is not a callable function.

get_content(client) is probably the best substitute.

[jonkeane]

Ah yes, thanks I'll bump that too