update versions and languages

Author: ethanpalm

navigation.mdx

@@ -348,7 +348,7 @@ For more information about referencing OpenAPI endpoints in your docs, see the [
 
 ## Versions
 
-Partition your navigation into different versions.
+Partition your navigation into different versions. Versions are selectable from a dropdown menu.
 
 <img
   className="block dark:hidden pointer-events-none"
@@ -360,6 +360,8 @@ Partition your navigation into different versions.
   src="/images/navigation/versions-dark.png"
 />
 
+In the `navigation` object, `versions` is an array where each entry is an object that requires a `version` field and can contain any other navigation fields.
+
 ```json
 {
   "navigation": {
@@ -389,7 +391,7 @@ Partition your navigation into different versions.
 
 ## Languages
 
-Partition your navigation into different languages.
+Partition your navigation into different languages. Languages are selectable from a dropdown menu.
 
 <img
   className="block dark:hidden pointer-events-none"
@@ -401,6 +403,8 @@ Partition your navigation into different languages.
   src="/images/navigation/languages-dark.png"
 />
 
+In the `navigation` object, `languages` is an array where each entry is an object that requires a `language` field and can contain any other navigation fields.
+
 We currently support the following languages:
 
 <CardGroup cols={2}>