Fix CHANGELOG.md for release 26.0.1 (#7418)

Author: MarkDuckworth

firebase-firestore/CHANGELOG.md

@@ -1,10 +1,5 @@
 # Unreleased
 
-# 26.0.1
-
-- [changed] Bumped internal dependencies.
-- [changed] Improve the performance of queries in collections that contain many deleted documents.
-  [#7295](//github.com/firebase/firebase-android-sdk/issues/7295)
 - [changed] Improve query performance in large result sets by replacing the deprecated AsyncTask
   thread pool with a self-managed thread pool.
   [#7376](//github.com/firebase/firebase-android-sdk/issues/7376)
@@ -15,6 +10,12 @@
 - [changed] Improve query performance by using an unsorted HashMap instead of a sorted TreeMap.
   [#7389](//github.com/firebase/firebase-android-sdk/pull/7389)
 
+# 26.0.1
+
+- [changed] Bumped internal dependencies.
+- [changed] Improve the performance of queries in collections that contain many deleted documents.
+  [#7295](//github.com/firebase/firebase-android-sdk/issues/7295)
+
 # 26.0.0
 
 - [changed] **Breaking Change**: Updated minSdkVersion to API level 23 or higher.