chore: rename price bump arg

[mattsse]

should be "txpool.pricebump"

https://github.com/ethereum/go-ethereum/blob/e0b119884c6af1858854d2bc3d5cf67001130023/cmd/utils/flags.go#L351-L351

[codecov]

Codecov Report

Merging #4399 (874b415) into main (80ee49b) will increase coverage by 0.02%.
Report is 3 commits behind head on main.
The diff coverage is 100.00%.

Files Changed	Coverage Δ
bin/reth/src/args/txpool_args.rs	25.71% <100.00%> (ø)

... and 13 files with indirect coverage changes

Flag	Coverage Δ
integration-tests	16.72% <0.00%> (-0.01%)	⬇️
unit-tests	63.61% <100.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
reth binary	26.01% <100.00%> (ø)
blockchain tree	82.56% <ø> (ø)
pipeline	90.07% <ø> (ø)
storage (db)	74.72% <ø> (ø)
trie	94.84% <ø> (ø)
txpool	47.86% <ø> (+0.49%)	⬆️
networking	77.51% <ø> (+0.02%)	⬆️
rpc	57.95% <ø> (-0.03%)	⬇️
consensus	63.53% <ø> (ø)
revm	31.74% <ø> (ø)
payload builder	6.78% <ø> (ø)
primitives	86.15% <ø> (-0.02%)	⬇️