Update src/content/guides/packages.md

Co-authored-by: Marya <[email protected]>

src/content/guides/packages.md

@@ -262,7 +262,7 @@ To update `pubspec.lock` run `dart pub get` without `--enforce-lockfile`.
 [content hash]: /tools/pub/glossary#content-hashes
 
 <a name="workspaces"></a>
-## Pub Workspaces (Mono-repo Support)
+## Pub workspaces (Monorepo support)
 
 When working on a project, you might develop multiple Dart packages in the same
 version control repository (a _monorepo_).