Fix typo in waitpid parameter name

[jimmycathy]

Description

Corrected parameter spelling from 'optons' to 'options' in waitpid declaration. This matches POSIX standard naming for the options parameter used to specify waitpid behavior flags like WNOHANG and WUNTRACED.

ref: https://pubs.opengroup.org/onlinepubs/9699919799/functions/waitpid.html

Sources

Checklist

• Relevant tests in libc-test/semver have been updated
• No placeholder or unstable values like *LAST or *MAX are
  included (see #3131)
• Tested locally (cd libc-test && cargo test --target mytarget);
  especially relevant for platforms that may not be checked in CI

[rustbot]

r? @tgross35

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[tgross35]

Please add a permalink to sources to the PR description for reference, otherwise lgtm.

[jimmycathy]

Please add a permalink to sources to the PR description for reference, otherwise lgtm.

Thanks. Modified.

Please review again.