Correct DXF gigametre conversion

crates/dxf/src/paths.rs

@@ -150,7 +150,7 @@ fn units_to_mm(code: i64, _measurement: Option<i64>) -> f64 {
         14 => 100.0,
         15 => 10_000.0,
         16 => 100_000.0,
-        17 => 1e9,
+        17 => 1e12,
         18 => 149_597_870_700_000.0,
         19 => 9.460_730_472_580_8e18,
         20 => 3.085_677_581_491_367e19,