fix vale after upgrade

Author: Mic92

maintainers/google-season-of-docs-2024.md

@@ -1,4 +1,4 @@
-# Google Season of Docs 2024: write Nix docker and cross compilation guides
+# Google season of docs 2024: write Nix docker and cross compilation guides
 
 ## About Nix
 

source/contributing/documentation/diataxis.md

@@ -39,7 +39,7 @@ A concept can also describe the historical context behind why something works th
 
 If you find yourself wanting to write about the nitty gritty details of how something works, you most likely want to write an explanation.
 
-### Guides vs. tutorials
+### Guides vs. Tutorials
 
 We find that contributors primarily struggle with the difference between a Guide and a Tutorial.
 

source/guides/recipes/post-build-hook.md

@@ -67,7 +67,7 @@ Make sure the hook program is executable by the `root` user:
 # chmod +x /etc/nix/upload-to-cache.sh
 ```
 
-## Updating nix configuration
+## Updating Nix configuration
 
 Set the [`post-build-hook`](https://nix.dev/manual/nix/2.22/command-ref/conf-file#conf-post-build-hook) configuration option on the local machine to run the hook:
 

vale/Style/headers.yml

@@ -1,5 +1,5 @@
 extends: capitalization
-message: "'%s' should be in sentence case"
+message: "Should be in sentence case: '%s'"
 level: error
 scope: heading
 # $title, $sentence, $lower, $upper, or a pattern.
@@ -9,3 +9,6 @@ indicators:
   - "."
 exceptions:
   - macOS
+  - Nix
+  - I
+  - GNOME