Update _posts/2021-09-26-newsletter.md

Co-authored-by: Benoit de Chezelles <[email protected]>

Author: justinmk

_posts/2021-09-26-newsletter.md

@@ -63,7 +63,7 @@ Work on [semantic highlighting](https://github.com/neovim/neovim/pull/14122) con
 
 Work on [nvim-treesitter](https://github.com/nvim-treesitter/nvim-treesitter) parser integration continues: performance, bug-fixes.
 
-Also, Neovim itself only provides a (Lua) API for generating and querying the syntax tree using the bundled tree-sitter library; see [`:h treesitter`](https://neovim.io/doc/user/treesitter.html). User-facing features like the ones mentioned above are implemented in plugins like
+Also, Neovim itself only provides a (Lua) API for generating and querying the syntax tree using the bundled tree-sitter library; see [`:h treesitter`](https://neovim.io/doc/user/treesitter.html). User-facing features like the ones mentioned above are implemented in plugins like XXX and XXX.
 
 ## Defaults