Correct indentation in examples - files/blockinfile.py (#3630)

* indentation in with_items section is out, correct that.

lib/ansible/modules/extras/files/blockinfile.py

@@ -141,9 +141,9 @@ EXAMPLES = r"""
       {{item.ip}} {{item.name}}
     marker: "# {mark} ANSIBLE MANAGED BLOCK {{item.name}}"
   with_items:
-      - { name: host1, ip: 10.10.1.10 }
+    - { name: host1, ip: 10.10.1.10 }
-      - { name: host2, ip: 10.10.1.11 }
+    - { name: host2, ip: 10.10.1.11 }
-      - { name: host3, ip: 10.10.1.12 }
+    - { name: host3, ip: 10.10.1.12 }
 """
 
 import re