Update aws_az_info.py (ansible-collections#1795)

aws_az_info - add example of filtering by state

SUMMARY
You can filter availability zones based on their state, such as "available," "unavailable," or "modifying."
ISSUE TYPE


Docs Pull Request

COMPONENT NAME
amazon.aws.aws_az_info:

Reviewed-by: Mark Chappell

plugins/modules/aws_az_info.py

@@ -39,6 +39,12 @@
   amazon.aws.aws_az_info:
     filters:
       zone-name: eu-west-1a
+
+- name: Gather information in a availability zones based on their state, such as "available"
+  amazon.aws.aws_az_info:
+    region: us-east-1
+    filters:
+      state: available
 """
 
 RETURN = r"""