ci: enforce single quotes in github yaml files

.github/workflows/build_docs.yml

@@ -52,5 +52,5 @@ jobs:
             mkdocs-material-
       - name: Run mkdocs
         env:
-          DISABLE_MKDOCS_2_WARNING: "true"
+          DISABLE_MKDOCS_2_WARNING: 'true'
         run: mkdocs gh-deploy --force

.prettierrc.toml

@@ -8,3 +8,8 @@ bracketSpacing = true
 objectWrap = "preserve"
 quoteProps = "as-needed"
 singleQuote = false
+
+[[overrides]]
+files = [".github/**/*.yml", ".github/**/*.yaml"]
+[overrides.options]
+singleQuote = true