docs: fix broken link

Author: wkillerud

docs/src/SUMMARY.md

@@ -17,6 +17,7 @@
 - [Getting started](language-server/getting-started.md)
 - [Configure a client](language-server/configure-a-client.md)
 - [Existing clients](language-server/existing-clients.md)
+  - [Kate](language-server/kate.md)
   - [Neovim](language-server/neovim.md)
 
 # Contributing to Some Sass

docs/src/contributing/writing-documentation.md

@@ -93,8 +93,6 @@ These are more guidelines than actual rules.
 - The first time you reference Visual Studio Code below a heading, write out the full name. After that you can use VS Code.
 - Prefer [Excalidraw][excalidraw] for diagrams, exported as PNG and included in Markdown as [an image][images].
 
-The [Hemingway Editor](https://hemingwayapp.com/) is a free tool to help edit your writing. You can also refer to these [notes from Google Technical Writing One][gtechwriting] if you'd like. That said, don't worry too much about the details.
-
 [brew]: https://brew.sh
 [mdbook]: https://rust-lang.github.io/mdBook/
 [installation]: https://rust-lang.github.io/mdBook/guide/installation.html

docs/src/language-server/existing-clients.md

@@ -2,5 +2,7 @@
 
 Editors with ready-configured clients, maintained by the community.
 
-- [Neovim](./neovim.md)
 - [Kate](./kate.md)
+- [Neovim](./neovim.md)
+
+<!-- Sort alphabetically. Add new pages to SUMMARY.md as well. -->