Update NEWS.md

Author: EmilHvitfeldt

NEWS.md

@@ -1,6 +1,6 @@
 # parsnip (development version)
 
-* Updates to some boosting tuning parameter information:
+* Updates to some boosting tuning parameter information: (#1306)
   - lightgbm and catboost have smaller default ranges for the learning rate: -3 to -1 / 2 in log10 units.
   - lightgbm, xgboost, catboost, and C5.0 have smaller default ranges for the sampling proportion: 0.5 to 1.0.
   - catboost engine arguments were added for `max_leaves` and `l2_leaf_reg`.