doc: correct and expand documentation for SQLTagStore #468

Job	Run time
Build slim tarball	1m 30s
aarch64-linux: with shared libraries	2h 16m 25s
x86_64-linux: with shared libraries	2h 25m 5s
aarch64-darwin: with shared libraries	2h 27m 50s
x86_64-darwin: with shared libraries	2h 14m 1s
	9h 24m 51s

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