fix: Updating IP to upper case

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: nairashu

src/azure-cli/azure/cli/command_modules/acs/_help.py

@@ -292,7 +292,7 @@
     short-summary: The ID of a subnet in an existing VNet into which to assign pods in the cluster (requires azure network-plugin).
   - name: --pod-ip-allocation-mode
     type: string
-    short-summary: Set the ip allocation mode for how Pod IPs from the Azure Pod Subnet are allocated to the nodes in the AKS cluster. The choice is between dynamic batches of individual IPs or static allocation of a set of CIDR blocks. Accepted Values are "DynamicIndividual" or "StaticBlock".
+    short-summary: Set the IP allocation mode for how Pod IPs from the Azure Pod Subnet are allocated to the nodes in the AKS cluster. The choice is between dynamic batches of individual IPs or static allocation of a set of CIDR blocks. Accepted Values are "DynamicIndividual" or "StaticBlock".
     long-summary: |
         Used together with the "azure" network plugin.
         Requires --pod-subnet-id.