fix(docs): reword prose that documentation_links read as a command

`every_documented_command_exists` scans the docs for `simon <word>` and
checks each is a real subcommand. A sentence I wrote in b31447e began
"simon already detects AI workloads…", which it read as `simon already`.

Self-inflicted, and caught by CI rather than by me: I committed a
docs-only change and pushed it without re-running the suite, on the
reasoning that prose cannot break a build. In this repo it can, because
there is a test that reads the prose — which is the point of having it.

Reworded to put the subject first. The test's behaviour is left alone: it
is doing exactly its job, and loosening the pattern to accommodate my
phrasing would trade a real check for a comfortable one.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>