Update earth_volcanoes_pixels.yml

Fixed bug: File "*/dora/.venv/lib/python3.8/site-packages/dora_exp_pipeline/outlier_detection.py", line 69, in run
    results = self._rank_internal(dtf, dts, dts_ids, top_n, seed, **kwargs)
TypeError: _rank_internal() missing 1 required positional argument: 'fit_single_trees'

sample_data/earth_volcanoes/exp/pixels/earth_volcanoes_pixels.yml

@@ -19,7 +19,8 @@ features: {
 top_n: 'None'
 outlier_detection: {
     iforest: {
-        n_trees: 100
+        n_trees: 100,
+        fit_single_trees: False
     },
     demud: {
         k: 1
@@ -37,4 +38,4 @@ outlier_detection: {
 # Results organization module
 results: {
     save_scores: {},
-}
+}