fix test

Author: sivukhin

libsql-sqlite3/test/libsql_vector_index.test

@@ -508,7 +508,7 @@ do_test vector-errors {
   {vector index(search): dimensions are different: 2 != 4}
   {vector index(search): third parameter (k) must be an integer, but float value were provided}
   {vector index(insert): dimensions are different: 1 != 3}
-  {vector index(search): unknown schema name 't'}
+  {vector index(search): unknown schema 't'}
 }]