fix: remove extra semicolon in ip-neighbour discovery ability command

[deacon-mp]

Bug

The command in ability f489321f31b6ef36304294562d3d4645 (Remote System Discovery - ip neighbour) contains fi; ; ip neighbour show — an extra ; ; sequence causing a shell syntax error on Linux hosts.

Location

data/abilities/discovery/f489321f31b6ef36304294562d3d4645.yml

Fix

Change fi; ; ip neighbour show → fi; ip neighbour show

Notes

The data/ directory is gitignored in the submodule, so this fix requires a direct PR to this repo (mitre/atomic), not a workaround in the caldera main repo.

Originally reported as mitre/caldera#3097.