Adding knowledge cut off. (#184)

Co-authored-by: Trent Fowler <[email protected]>

fern/pages/models/the-command-family-of-models/command-r-plus.mdx

@@ -37,6 +37,8 @@ With the release, both models include the following feature improvements:
 
 What's more, both these updated models can now operate in one of several safety modes, which gives developers more granular control over how models generate output in a variety of different contexts. Find more in these [safety modes docs](https://docs.cohere.com/docs/safety-modes).
 
+These refreshed models were trained with data through February 2023. 
+
 
 ## Unique Command R+ Model Capabilities