test

Move package related docs out of `/guides` directory (#6260) #2065

Job	Run time
Check if code excerpts are up to date	17s
Validate Firebase configuration	19s
Check if text can be replaced with site variables	24s
Analyze and test code examples (beta, false)	1m 51s
Analyze and test code examples (stable, false)	1m 49s
Build site and check links	52s
	5m 32s

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