message: Fix typo in gitignore docs.
diff: @@ -416,7 +416,7 @@ The patterns should be [gitignore]-style patterns. Briefly:
  `foo`.
  - `/**/` matches zero or more directories. For example, `a/**/b` matches
  `a/b`, `a/x/b`, `a/x/y/b`, and so on.
  -- `!` prefix negates a pattern. For example, a pattern of `src/**.rs` and
  +- `!` prefix negates a pattern. For example, a pattern of `src/*.rs` and
  `!foo.rs` would match all files with the `.rs` extension inside the `src`
  directory, except for any file named `foo.rs`.
  