Fix cassandra typo
@@ -105,7 +105,7 @@ add support for almost basic data type, and some complex data type.
| database/filesystem | reader | writer | plugin(reader/writer) | memo |
| ------------------- | ------ | ------ | --------------------------------------- | ------------------------------------------------------------------------------------------ |
-| Cassander | YES | YES | cassandrareader/cassandrawriter | |
+| Cassandra | YES | YES | cassandrareader/cassandrawriter | |
| ClickHouse | YES | YES | clickhousereader/clickhousewriter | |
| DB2 | YES | YES | rbdmsreader/rdbmswriter | not fully tested |
| DBF | YES | YES | dbffilereader/dbffilewriter | |
