Generators/HTML: fix line break handling #2138

Job	Run time
Build Phar on PHP: 8.0	23s
Coverage: 8.4 (Linux)	4m 17s
Coverage: 8.4 (Win)	1m 44s
Coverage: 5.4 (Linux)	25m 35s
Coverage: 5.5 (Win)	1m 49s
Coverage: 7.2 with custom ini settings (Linux)	5m 46s
PHP: 5.4 (Linux)	1m 40s
PHP: 5.5 (Linux)	7m 29s
PHP: 5.6 (Linux)	5m 42s
PHP: 7.0 (Linux)	1m 43s
PHP: 7.1 (Linux)	1m 22s
PHP: 7.2 (Linux)	1m 37s
PHP: 7.3 (Linux)	50s
PHP: 7.4 (Linux)	58s
PHP: 8.0 (Linux)	1m 0s
PHP: 8.1 (Linux)	52s
PHP: 8.2 (Linux)	54s
PHP: 8.3 (Linux)	58s
PHP: 8.4 (Linux)	35s
PHP: 8.5 (Linux)	57s
PHP: 5.5 (Win)	1m 3s
PHP: 5.6 (Win)	5m 44s
PHP: 7.0 (Win)	1m 28s
PHP: 7.1 (Win)	1m 31s
PHP: 7.2 (Win)	1m 16s
PHP: 7.3 (Win)	52s
PHP: 7.4 (Win)	51s
PHP: 8.0 (Win)	49s
PHP: 8.1 (Win)	49s
PHP: 8.2 (Win)	1m 3s
PHP: 8.3 (Win)	1m 9s
PHP: 8.4 (Win)	49s
PHP: 8.5 (Win)	53s
PHP: 5.5 with custom ini settings (Linux)	6m 40s
PHP: 7.0 with custom ini settings (Linux)	1m 4s
coveralls-finish	3s
	1h 32m 15s

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