Correct link for model generator field types

The most complete list of field types appears in the `SchemaStatements` docs rather than the `TableDefinition` docs.

The change to link to `SchemaStatements` means that the explanation for the `index` parameter is no longer available on the linked-to page. A brief explanation of the `index` parameter is added directly in the guide to make up for this.

1 files changed, 1 insertions, 1 deletions

diff --git a/guides/source/command_line.md b/guides/source/command_line.md
index f766403228..42276bcb90 100644
--- a/guides/source/command_line.md
+++ b/guides/source/command_line.md
@@ -209,7 +209,7 @@ Description:
     Create rails files for model generator.
 ```
 
-NOTE: For a list of available field types, refer to the [API documentation](http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/TableDefinition.html#method-i-column) for the column method for the `TableDefinition` class.
+NOTE: For a list of available field types for the `type` parameter, refer to the [API documentation](http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/SchemaStatements.html#method-i-add_column) for the add_column method for the `SchemaStatements` module. The `index` parameter generates a corresponding index for the column.
 
 But instead of generating a model directly (which we'll be doing later), let's set up a scaffold. A **scaffold** in Rails is a full set of model, database migration for that model, controller to manipulate it, views to view and manipulate the data, and a test suite for each of the above.