docs: H3 headings for Rebrand Journey and Explore sections, add full … #3

Job	Run time
playwright-iphone-emulation (18.x)	15s
playwright-android (18.x)	17s
playwright-extension (18.x)	19s
playwright-single-test (18.x)	20s
playwright-smart-ui (18.x)	18s
playwright-java	27s
playwright-lighthouse (18.x)	16s
playwright-test-js (18.x)	18m 27s
playwright-python (3.9)	16s
playwright-cucumber-js (18.x)	16s
playwright-parallel (18.x)	15s
playwright-jest-js (18.x)	11m 26s
playwright-csharp	1m 1s
playwright-java-junit	32s
playwright-test-ts (18.x)	2m 28s
playwright-csharp-specflow	2m 23s
	39m 16s

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