release note wordsmithing

Author: morganchen12

FirebaseVertexAI/CHANGELOG.md

@@ -1,5 +1,7 @@
-# 0.2.0
+# 10.26.0
 
-- [added] Initial VertexAI release. See the
+- [added] Public Preview release of the Vertex AI for Firebase SDK - build
+  AI-powered mobile apps and features with the Gemini API using this new SDK.
+  See the
   [docs](https://firebase.google.com/docs/vertex-ai/get-started?platform=ios)
   for instructions on how to get started.