internal/postgres: use symbol text search configuration
symbolTextSearchConfiguration is changed from simple to the custom
symbol text search configuration.
For golang/go#44142
Trust: Julie Qiu
Run-TryBot: Julie Qiu
TryBot-Result: kokoro
@@ -187,7 +187,7 @@ func (db *DB) symbolSearch(ctx context.Context, q string, limit, offset, maxResu
// symbolTextSearchConfiguration is the search configuration that is used for
// indexing and searching for symbols.
-const symbolTextSearchConfiguration = "simple"
+const symbolTextSearchConfiguration = "symbols"
// processSymbol converts a symbol with underscores to slashes (for example,
// "A_B" -> "A/B"). This is because the postgres parser treats underscores as
