Fix caution for client library functions (#105)

The admonition is currently not rendering correctly, removes title and
switches to `caution`.

Author: Xenc5

docs/capabilities/client/overview.mdx

@@ -39,7 +39,7 @@ if (result) {
 | **Form** | Display interactive forms with promise-based responses | `showForm()` |
 | **Navigation** | Redirect to Reddit content or external URLs | `navigateTo()` |
 
-:::note When to use client library functions
+:::caution
 You should only use client library functions in response to a user-initiated action.
 :::
 

versioned_docs/version-0.12/capabilities/client/overview.mdx

@@ -39,7 +39,7 @@ if (result) {
 | **Form** | Display interactive forms with promise-based responses | `showForm()` |
 | **Navigation** | Redirect to Reddit content or external URLs | `navigateTo()` |
 
-:::note When to use client library functions
+:::caution
 You should only use client library functions in response to a user-initiated action.
 :::