Auto merge of #10874 - weihanglo:cleanup-unstable, r=ehuss

Clean up leftover in unstable documentation

### What does this PR try to resolve?

- Fix the name of the link to `--keep-going` original issue.
- Clean up leftover of `strip` option in unstable documentation.

src/doc/src/reference/unstable.md

@@ -87,7 +87,6 @@ Each new feature described below should explain how to use it.
     * [`doctest-in-workspace`](#doctest-in-workspace) — Fixes workspace-relative paths when running doctests.
     * [rustdoc-map](#rustdoc-map) — Provides mappings for documentation to link to external sites like [docs.rs](https://docs.rs/).
 * `Cargo.toml` extensions
-    * [Profile `strip` option](#profile-strip-option) — Forces the removal of debug information and symbols from executables.
     * [Profile `rustflags` option](#profile-rustflags-option) — Passed directly to rustc.
     * [per-package-target](#per-package-target) — Sets the `--target` to use for each individual package.
     * [artifact dependencies](#artifact-dependencies) - Allow build artifacts to be included into other build artifacts and build them for different targets.
@@ -455,7 +454,7 @@ cargo rustc --crate-type lib,cdylib -Z unstable-options
 ```
 
 ### keep-going
-* Tracking Issue: [#0](https://github.com/rust-lang/cargo/issues/10496)
+* Tracking Issue: [#10496](https://github.com/rust-lang/cargo/issues/10496)
 
 `cargo build --keep-going` (and similarly for `check`, `test` etc) will build as
 many crates in the dependency graph as possible, rather than aborting the build