[v12] Clarify how to decide undocumented style questions

docs/pages/contributing/documentation/style-guide.mdx

@@ -111,14 +111,21 @@ Specific kinds of architecture guides include:
 - Should be easy to navigate with a browser's search functionality. List all content on the same page.
 - Should avoid prose and be expressed with brevity.
 
-
 ## General style rules
 
 Please refer to this style guide when determining how address questions about
 English grammar, usage, and so on. Since many of these rules have equally
 justifiable alternatives, a style guide prevents debates over these questions
 from getting in the way of documenting Teleport.
 
+<Notice type="tip">
+
+If a commonly debated style question does not have a resolution in this guide
+(e.g., the Oxford comma), all we ask is that you keep your style consistent
+within a particular page to maintain a professional polish.
+
+</Notice>
+
 ### Voice
 
 The documentation should be technically precise and directed toward a technical