WIP: chore(xtask): changelog: add --allow-changes-in-released

Author: ErichDonGubler

xtask/src/main.rs

@@ -43,7 +43,7 @@ Commands:
 
     All extra arguments will be forwarded to cargo-nextest (NOT wgpu-info)
 
-  changelog [from_branch] [to_commit]
+  changelog [--allow-changes-in-released] [from_branch] [to_commit]
     Audit changes in the `CHANGELOG.md` at the root of the repo. Ensure that:
 
     1. All changes are in an `Unreleased` section, unless `--allow-changes-in-released` is specified.
@@ -52,6 +52,8 @@ Commands:
 
         `<to_commit>` is the tip of the `git diff` that will be used for checking (1).
 
+    2. The contents of `Unreleased` conform to the sections described at the top of the `CHANGELOG.md`.
+
   miri
     Run all miri-compatible tests under miri. Requires a nightly toolchain
     with the x86_64-unknown-linux-gnu target and miri component installed.