Update README.md

Author: pditommaso

Diff for: README.md

@@ -72,7 +72,7 @@ ch = channel.sql.fromQuery('select alpha, delta, omega from SAMPLE', db: 'foo')
 
 ### sqlInsert
 
-The `insertInto` operator provided by this plugin allows populating a database table with the data emitted
+The `sqlInsert` operator provided by this plugin allows populating a database table with the data emitted
 by a Nextflow channels and therefore produced as result by a pipeline process or an upstream operator. For example:
 
 ```