Update docs/platforms/python/tracing/instrumentation/index.mdx

Co-authored-by: Alex Krawiec <[email protected]>

Author: 2 people

docs/platforms/python/tracing/instrumentation/index.mdx

@@ -155,7 +155,7 @@ if current_span:
 
 ## Working with Transactions
 
-Transactions are a special type of span that represent a complete operation in your application, such as a web request. You can create transactions explicitly:
+[Transactions](/product/insights/overview/transaction-summary/#what-is-a-transaction) are a special type of span that represent a complete operation in your application, such as a web request. You can create transactions explicitly:
 
 ```python
 import sentry_sdk