Fix qp-index-search looking in wrong place for config

quickpeep_indexer/src/bin/qp-index-search.rs

@@ -26,7 +26,7 @@ pub fn main() -> anyhow::Result<()> {
 
     let config_path = opts
         .config
-        .unwrap_or_else(|| PathBuf::from("qp_indexer.toml"));
+        .unwrap_or_else(|| PathBuf::from("quickpeep.ron"));
     let config = IndexerConfig::load(&config_path).context("Failed to load config")?;
 
     let indexer_backend = config.open_indexer_backend()?;