docs: fix new clippy lint about excessively long initial line #2000

Job	Run time
Docs - nightly toolchain (recent)	27s
Bench - nightly toolchain (recent)	1m 24s
Docs - stable toolchain (recent)	22s
Embedded	1m 40s
Format - nightly toolchain	15s
Integration tests - stable toolchain (26_0)	53s
Lint - nightly toolchain (recent)	43s
Integration tests - stable toolchain (25_2)	55s
Test - nightly toolchain (minimal)	16m 31s
Test - 1.63.0 toolchain (minimal)	30m 58s
Test - nightly toolchain (recent)	16m 39s
Test - 1.63.0 toolchain (recent)	29m 44s
Test - stable toolchain (minimal)	18m 29s
Integration tests - stable toolchain (25_1)	1m 6s
Test - stable toolchain (recent)	18m 57s
Integration tests - stable toolchain (25_0)	1m 30s
Integration tests - stable toolchain (24_2)	1m 28s
Integration tests - stable toolchain (24_1)	57s
Integration tests - stable toolchain (24_0_1)	1m 18s
Integration tests - stable toolchain (23_2)	1m 27s
Integration tests - stable toolchain (23_1)	54s
Integration tests - stable toolchain (23_0)	1m 13s
Integration tests - stable toolchain (22_1)	1m 0s
Integration tests - stable toolchain (22_0)	1m 20s
Integration tests - stable toolchain (0_21_2)	55s
Integration tests - stable toolchain (0_20_2)	1m 5s
Integration tests - stable toolchain (0_19_1)	56s
Integration tests - stable toolchain (0_18_1)	53s
Integration tests - stable toolchain (0_17_1)	1m 0s
	2h 34m 59s

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