Fixed #26684 -- Removed incorrect index example in docs/ref/contrib/postgres/search.txt.

In the event that all the fields you're querying on are contained within one

particular model, you can create a functional index which matches the search

vector you wish to use. For example:

.. code-block:: sql

    CREATE INDEX body_text_search ON blog_entry (to_tsvector(body_text));

This index will then be used by subsequent queries. In many cases this will be

sufficient.

vector you wish to use. The PostgreSQL documentation has details on

`creating indexes for full text search

<http://www.postgresql.org/docs/current/static/textsearch-tables.html#TEXTSEARCH-TABLES-INDEX>`_.

``SearchVectorField``

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