Update manual.toml

[sincorchetes]

Add my customs flakes.

[raboof]

LGTM if CI agrees (and isn't failing on #1175 anymore)

[sincorchetes]

Issue:

Caused by:
    0: Failed to gather information about github:Hythera/nix-waterfox
    1: command 'nix eval --json --no-allow-import-from-derivation --no-write-lock-file -f '/nix/store/n31pmp35bi7dfxsndpv9qzcyi85s4fpc-flake-info/assets/commands/flake_info.nix' -I nixpkgs=https://github.com/NixOS/nixpkgs/archive/refs/heads/nixpkgs-unstable.tar.gz --override-flake input-flake github:Hythera/nix-waterfox --argstr flake github:Hythera/nix-waterfox all' failed: exit status: 1

2: While processing flake github:NixOS/hydra

Caused by:
    0: Failed to gather information about github:NixOS/hydra
    1: command 'nix eval --json --no-allow-import-from-derivation --no-write-lock-file -f '/nix/store/n31pmp35bi7dfxsndpv9qzcyi85s4fpc-flake-info/assets/commands/flake_info.nix' -I nixpkgs=https://github.com/NixOS/nixpkgs/archive/refs/heads/nixpkgs-unstable.tar.gz --override-flake input-flake github:NixOS/hydra --argstr flake github:NixOS/hydra all' failed: exit status: 1
2026-04-08T15:12:48.4210878Z ##[endgroup]
2026-04-08T15:12:48.4213206Z ##[error]Process completed with exit code 1.

[raboof]

Jep that's #1175