fix table schemas in README

Author: smola

README.md

@@ -76,7 +76,7 @@ gitquery exposes the following tables:
 |:------------:|:---------------------------------------------------------------------------------------------------:|
 | commits | hash, author_name, author_email, author_time, comitter_name, comitter_email, comitter_time, message |
 | blobs | hash, size |
-| references | hash,hash, name, is_branch, is_note, is_remote, is_tag, target  |
+| refs | name, type, hash, target, is_branch, is_note, is_remote, is_tag |
 | tags | hash, name, tagger_email, tagger_name, tagger_when, message, target |
 | tree_entries | tree_hash, entry_hash, mode, name |