move history

Author: reneeli@microsoft.com

src/aks-preview/HISTORY.rst

@@ -13,14 +13,14 @@ Pending
 +++++++
 * Remove TrustedAccess commands from aks-preview extension as it is GA and exists in azure-cli for long time.
 
-14.0.0b7
-++++++++
-* Add `az aks create/update --enable-retina-flow-logs` and `az aks update --disable-retina-flow-logs` commands.
-
 15.0.0b1
 ++++++++
 * [BREAKING CHANGE] Change `--vm-sizes` for VirtualMachines manual profile to awalys support single SKU size.
 
+14.0.0b7
+++++++++
+* Add `az aks create/update --enable-retina-flow-logs` and `az aks update --disable-retina-flow-logs` commands.
+
 14.0.0b6
 +++++++
 * Add option `--acns-advanced-networkpolicies <None|FQDN|L7>` to `az aks create/update`