Utilize the skip_dirs and skip_files keyword arguments to servedocs, see LiveServer.jl/src/utils.jl at eec3d5b23d16e296ba55c4f99084c1814bee5165 · tlienart/LiveServer.jl · GitHub.
Example usage: Ferrite.jl/docs/liveserver.jl at 241d181490511e67fcb5d723b67ecb1c22cbe363 · Ferrite-FEM/Ferrite.jl · GitHub