Remove trailing space from `CapWords` message #25319

Job	Run time
pre-commit	49s
python package	1m 20s
Determine changes	8s
cargo fmt	13s
mkdocs	2m 9s
cargo clippy	1m 52s
cargo test (wasm)	1m 33s
cargo test (windows)	6m 30s
cargo test (linux)	3m 55s
benchmarks	4m 18s
cargo fuzz	5m 10s
cargo udeps	1m 57s
formatter instabilities and black similarity	0s
test scripts	55s
test ruff-lsp	17s
ecosystem	8m 10s
	39m 16s

Provide feedback