Fix incorrect tsvector conversion to casting.

queries.sql

@@ -3,7 +3,7 @@ WITH q AS (
     -- Prepare TS_QUERY tokens for querying with either:
     -- a) built in Postgres dictionary/tokenizer ($1=query, $2=Postgres dictionary name)
     -- b) externally computed and supplied tokens ($3)
-    SELECT (CASE WHEN $2 != '' THEN PLAINTO_TSQUERY($2::regconfig, $1::TEXT) ELSE TO_TSQUERY($3) END) AS query
+    SELECT (CASE WHEN $2 != '' THEN PLAINTO_TSQUERY($2::regconfig, $1::TEXT) ELSE $3::TSQUERY END) AS query
 ),
 directMatch AS (
     -- Do a direct string match (first 50 chars) of the query or see if there are matches for