Fix SyscallLogPubkey doc comment #6264

Job	Run time
test (token/cli, token/program, token/program-2022, associated-token-account/program, instruction...	18m 33s
check	4m 37s
test (single-pool/cli, single-pool/program)	18m 40s
cargo-test-sbf (token/program)	9m 6s
test (token-upgrade/cli, token-upgrade/program)	23m 2s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	13m 57s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	9m 32s
cargo-test-sbf (token-upgrade/program)	10m 41s
cargo-test-sbf (feature-proposal/program)	8m 12s
cargo-test-sbf (governance/addin-mock/program, governance/program)	14m 34s
cargo-test-sbf (memo/program)	8m 38s
cargo-test-sbf (name-service/program)	8m 39s
cargo-test-sbf (stake-pool/program)	13m 39s
cargo-test-sbf (single-pool/program)	9m 21s
	2h 51m 11s

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