Backport of Fix: Inaccurate Memory Resource Example into release/1.9.x

[hc-github-team-nomad-core]

Backport

This PR is auto-generated from #25023 to be assessed for backporting due to the inclusion of the label backport/1.9.x.

The below text is copied from the body of the original PR.

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Description

Fix: Inaccurate Memory Resource Example

Nomad memory sizes are always in binary units (plenty of places with e.g. MemoryMB * 1024 * 1024 around the codebase). This snippet of documentation, however, is misleading, and implies that Nomad manages/tracks memory with decimal units.

Without going crazy changing "MB"->"MiB" everywhere, causing mass confusion and horrid edit wars, let's just change this one number! This is a subtle but effective way to signal to developers that we're using binary-based sizes.

(Even if this argument fails, this documentation is plain wrong: MemoryMB = 2000 will use ~2.1GB: 2000 binary megabytes, 1048576 bytes each.)

Testing & Reproduction steps

N/A

Links

Example of size computation in Docker driver, clearly computing mibibytes

Contributor Checklist

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  ensure regressions will be caught.
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  and job configuration, please update the Nomad website documentation to reflect this. Refer to
  the website README for docs guidelines. Please also consider whether the
  change requires notes within the upgrade guide.

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Overview of commits

• 824d362