Correct the inaccurate docstring for int4_row_quantize() (#4904) #18768

Job	Run time
build-macos (macos-13, shared)	20m 52s
build-macos (macos-13, static)	21m 28s
build-bazel (x86, linux.12xlarge, gcc)	9m 58s
build-windows (windows-2022, static)	12m 30s
build-windows (windows-2022, shared)	12m 50s
build-linux (x86, linux.12xlarge, static, gcc, 9.5.0)	25m 48s
build-bazel (x86, linux.12xlarge, clang)	9m 27s
build-linux (x86, linux.12xlarge, shared, gcc, 9.5.0)	25m 51s
build-linux (x86, linux.12xlarge, shared, gcc, 14.1.0)	26m 28s
build-linux (x86, linux.12xlarge, static, gcc, 14.1.0)	26m 24s
build-linux (x86, linux.12xlarge, shared, clang, 16.0.6)	19m 57s
build-linux (x86, linux.12xlarge, static, clang, 16.0.6)	20m 11s
build-linux (arm, linux.arm64.m7g.4xlarge, static, clang, 16.0.6)	33m 18s
build-linux (arm, linux.arm64.m7g.4xlarge, static, gcc, 14.1.0)	1h 21m 44s
build-linux (arm, linux.arm64.m7g.4xlarge, shared, gcc, 14.1.0)	1h 20m 49s
build-linux (arm, linux.arm64.m7g.4xlarge, shared, clang, 16.0.6)	33m 9s
	7h 40m 44s

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