Fix typo. Navigator should be lower case here. (#41040)

* Fix typo. Navigator should be lower case here.

Navigator.languages
=> undefined
navigator.languages
=> Array [ "en-US", "en" ]

* Same here (see previous commit)

* Apply suggestions from code review

---------

Co-authored-by: Joshua Chen <sidachen2003@gmail.com>

Author: Biserkov

files/en-us/web/api/navigator/language/index.md

@@ -8,7 +8,7 @@ browser-compat: api.Navigator.language
 
 {{APIRef("HTML DOM")}}
 
-The **`Navigator.language`** read-only property returns a string representing the preferred language of the user, usually the language of the browser UI.
+The **`language`** read-only property of the {{domxref("Navigator")}} interface returns a string representing the preferred language of the user, usually the language of the browser UI.
 
 ## Value
 

files/en-us/web/api/navigator/languages/index.md

@@ -8,7 +8,7 @@ browser-compat: api.Navigator.languages
 
 {{APIRef("HTML DOM")}}
 
-The **`Navigator.languages`** read-only property
+The **`languages`** read-only property of the {{domxref("Navigator")}} interface
 returns an array of strings representing the user's preferred
 languages. The language is described using language tags according to
 {{RFC(5646, "Tags for Identifying Languages (also known as BCP 47)")}}. In the returned