chore: update out-of-date docs build fix expectation

.github/workflows/ci.yml

@@ -37,7 +37,7 @@ env:
   #
   # This needs to be newer to work around https://github.com/gfx-rs/wgpu/issues/4905.
   #
-  # Once 1.76 coes out, we can use that instead of nightly.
+  # Once this fix hits stable Rust, we can use that instead of nightly.
   DOCS_RUST_VERSION: "nightly-2023-12-17"
   # This is the MSRV used by `wgpu` itself and all surrounding infrastructure.
   REPO_MSRV: "1.76"