QL: Fix JSON extraction

I had forgotten about this extra filtering that takes place in the
extractor.

ql/extractor/src/main.rs

@@ -108,6 +108,9 @@ fn main() -> std::io::Result<()> {
                 && !line.ends_with(".dbscheme")
                 && !line.ends_with("qlpack.yml")
                 && !line.ends_with(".blame")
+                && !line.ends_with(".json")
+                && !line.ends_with(".jsonl")
+                && !line.ends_with(".jsonc")
             {
                 return Ok(());
             }