[DOCS] Fixed typo in object-type.asciidoc

docs/reference/mapping/types/object-type.asciidoc

@@ -174,5 +174,5 @@ In the above, `name` and its content will not be indexed at all.
 
 `include_in_all` can be set on the `object` type level. When set, it
 propagates down to all the inner mappings defined within the `object`
-that do no explicitly set it.
+that do not explicitly set it.