[XS] Change in flashrom[main]: doc: Add meson test command to TLDR for meson instructions

[Jes Klinke (Code Review)]

Attention is currently required from: Alexander Goncharov, Anastasia Klimchuk, Peter Marheine.

Jes Klinke has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/78689?usp=email )

Change subject: doc: Add meson test command to TLDR for meson instructions
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Patch Set 2: Code-Review+1

(1 comment)

Patchset:

PS1:
> That's a good idea, and I forgot about TLDR in README. I added there too. […]

I would agree that when developers see the sequence "setup", "compile", "test", "install".  They can figure out that if they do not need the binaries in their /usr/local/bin or wherever, they will skip the final "install" command, or if they to not care about running tests (on un-modified source code maybe), then they will skip the "test" step.  I do not think it is necessary to explicitly call out either as being optional.