readme: Reflect suggestion API work in progress

README.md

@@ -16,7 +16,9 @@ fn main() {
     if dict.check(&word) {
         println!("{word:?} is in the dictionary.");
     } else {
-        eprintln!("{word:?} is NOT in the dictionary.");
+        let mut suggestions = Vec::new();
+        dict.suggest(&word, &mut suggestions);
+        eprintln!("{word:?} is NOT in the dictionary. Did you mean {suggestions:?}?");
         std::process::exit(1);
     }
 }
@@ -28,7 +30,7 @@ Spellbook is `no_std` and only requires [`hashbrown`] as a dependency. (Note tha
 
 Spellbook is a work in progress and might see breaking changes to any part of the API as well as updates to the MSRV and dependencies.
 
-Currently the `check` API works well for `en_US` - a relatively simple dictionary - though it should work reasonably well for most other dictionaries. Some dictionaries which use complex compounding directives may work less well. The `suggest` API is not yet implemented but is planned.
+Currently the `check` API works well for `en_US` - a relatively simple dictionary - though it should work reasonably well for most other dictionaries. Some dictionaries which use complex compounding directives may work less well. The `suggest` API is a work in progress.
 
 Spellbook should be considered to be in _alpha_. Part of the Hunspell test corpus has been successfully ported and there are a healthy number of unit tests, but there are certainly bugs to be found.