Update link to record objects

#303 renamed records.py to records/__init__.py.

This updates docs/records.md to link to the new path.

docs/records.md

@@ -174,6 +174,6 @@ In the above example each name had a single record, but there are cases where a
 
 ### Record data
 
-Each record type has a corresponding set of required data. The easiest way to determine what's required is probably to look at the record object in [`octodns/record.py`](/octodns/record.py). You may also utilize `octodns-validate` which will throw errors about what's missing when run.
+Each record type has a corresponding set of required data. The easiest way to determine what's required is probably to look at the record object in [`octodns/record/__init__.py`](/octodns/record/__init__.py). You may also utilize `octodns-validate` which will throw errors about what's missing when run.
 
 `type` is required for all records. `ttl` is optional. When TTL is not specified the `YamlProvider`'s default will be used. In any situation where an array of `values` can be used you can opt to go with `value` as a single item if there's only one.