[rllib] Fix some missing f-strings #24148
Merged
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Noticed some strings should've been f-strings; this fixes them, and
fixes a minor bug that was present, as a result.
Note that I only did this in the
rllib
folder; I didn't want to go through everything, because my regex generated a lot of false positives; but someone better with regexes could probably improve it:Why are these changes needed?
It's a bug.
Related issue number
Checks
scripts/format.sh
to lint the changes in this PR.