Fix HTML semantics in script run instructions #1520

Job	Run time
pylint (macos)	13s
todo-check	3s
pylint (ubuntu)	12s
lint (npm run lint:eslint, macos)	1m 10s
pylint (windows)	41s
validate-collection-files (macos)	14s
lint (npm run lint:eslint, ubuntu)	1m 5s
validate-collection-files (ubuntu)	13s
lint (npm run lint:eslint, windows)	4m 56s
validate-collection-files (windows)	47s
lint (npm run lint:yaml, macos)	44s
lint (npm run lint:yaml, ubuntu)	30s
lint (npm run lint:yaml, windows)	3m 41s
lint (npm run lint:md, macos)	42s
lint (npm run lint:md, ubuntu)	31s
lint (npm run lint:md, windows)	4m 45s
lint (npm run lint:md:consistency, macos)	41s
lint (npm run lint:md:consistency, ubuntu)	28s
lint (npm run lint:md:consistency, windows)	4m 2s
lint (npm run lint:md:relative-urls, macos)	44s
lint (npm run lint:md:relative-urls, ubuntu)	38s
lint (npm run lint:md:relative-urls, windows)	2m 32s
lint (npm run lint:md:external-urls, macos)	1m 1s
lint (npm run lint:md:external-urls, ubuntu)	43s
lint (npm run lint:md:external-urls, windows)	3m 13s
	34m 29s

Provide feedback