Fix code example indentation (#26697)

Author: bevacqua

docs/reference/query-dsl/nested-query.asciidoc

@@ -40,8 +40,8 @@ GET /_search
             "query" : {
                 "bool" : {
                     "must" : [
-                    { "match" : {"obj1.name" : "blue"} },
-                    { "range" : {"obj1.count" : {"gt" : 5}} }
+                        { "match" : {"obj1.name" : "blue"} },
+                        { "range" : {"obj1.count" : {"gt" : 5}} }
                     ]
                 }
             }