docs(terms): state Apache-2.0, the licence this repo actually ships

[h4x0r]

What

docs/terms.md stated the MIT Licence. This repo ships Apache-2.0 —
both LICENSE and the crate manifest say so. Corrected the document to match.

Why this is stale residue, not a licensing change

The fleet standardised on Apache-2.0 for its explicit patent grant. The LICENSE
file and Cargo.toml were migrated; this document was not. Two independent
sources already agreed against the third — nothing about what the software is
licensed under changes here, only what the document claims.

Three-way verification (after this change)

terms.md   : [Apache License 2.0](../LICENSE). These terms supplement, but do not override, that | By using the software you accept these terms and the terms of the Apache License 2.0.
LICENSE    : Apache License / Version 2.0, January 2004
Cargo.toml : Cargo.toml: license = "Apache-2.0"
Cargo.toml : crates/exec-pe-analysis/Cargo.toml: license.workspace = true
Cargo.toml : crates/exec-pe-core/Cargo.toml: license.workspace = true

Collision risk

The diff touches docs/terms.md only, so it should not collide with other open
PRs on this repo. docs/privacy.md is deliberately untouched.