Highlights for staging signs not documented

[gollux]

Description

The documentation does not list the highlight groups for staged signs, e.g., GitSignsStagedAdd.

Neovim version

NVIM v0.10.3 Build type: Release LuaJIT 2.1.1713484068

Operating system and version

Linux (Debian Bookworm)

Expected behavior

:help gitsigns should include GitSignsStaged....

Actual behavior

The highlight groups are missing from documentation, even though they work properly.

Minimal config

Does not depend on config.

Steps to reproduce

:help gitsigns

Gitsigns debug messages

No response

Gitsigns cache

No response