feat: Add link to API docs

Author: sentrivana

docs/platforms/python/usage/index.mdx

@@ -26,10 +26,14 @@ While capturing an event, you can also record the breadcrumbs that lead up to th
 
 <PlatformContent includePath="capture-error" />
 
+See the [API documentation](https://getsentry.github.io/sentry-python/api.html#sentry_sdk.api.capture_exception) for details on the `capture_exception` function.
+
 ## Capturing Messages
 
 Another common operation is to capture a bare message. A message is textual information that should be sent to Sentry. Typically, our SDKs don't automatically capture messages, but you can capture them manually.
 
 Messages show up as issues on your issue stream, with the message as the issue name.
 
 <PlatformContent includePath="capture-message" />
+
+See the [API documentation](https://getsentry.github.io/sentry-python/api.html#sentry_sdk.api.capture_message) for details on the `capture_message` function.