Correct JavaDoc for renameColumn method

Change-Id: I0c6635792d33cf7c75ca51cd6e9ad90ef8dda2f8

src/main/java/com/google/gwtorm/schema/sql/SqlDialect.java

diff --git a/src/main/java/com/google/gwtorm/schema/sql/SqlDialect.java b/src/main/java/com/google/gwtorm/schema/sql/SqlDialect.java
index fdfe6c8..458d4f9 100644
--- a/src/main/java/com/google/gwtorm/schema/sql/SqlDialect.java
+++ b/src/main/java/com/google/gwtorm/schema/sql/SqlDialect.java
@@ -369,7 +369,7 @@
    * Rename an existing column in a table.
    *
    * @param e statement to use to execute the SQL command(s).
-   * @param tableName table to add the column onto.
+   * @param tableName table to rename the column in.
    * @param fromColumn source column name
    * @param col destination column definition
    * @throws OrmException the column could not be renamed.