Adjust documentation for configuring Linux huge pages.

Nathan Bossart <nathan@postgresql.org>

Commit: 053b6daeb9c5ec26289479ab63601f0cd39f51a7
Author: Nathan Bossart <nathan@postgresql.org>
Date: 2024-10-18T15:20:15Z
Releases: 17.1
Adjust documentation for configuring Linux huge pages.

The present wording about viewing shared_memory_size_in_huge_pages
seems to suggest that the parameter cannot be viewed after startup
at all, whereas the intent is to make it clear that you can't use
"postgres -C" to view this parameter while the server is running.
This commit rephrases this section to remove the ambiguity.

Author: Seino Yuki
Reviewed-by: Michael Paquier, David G. Johnston, Fujii Masao
Discussion: https://postgr.es/m/420584fd274f9ec4f337da55ffb3b790%40oss.nttdata.com
Backpatch-through: 15

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doc/src/sgml/runtime.sgml modified +4 −5

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