Update yt/frontends/cholla/data_structures.py

Co-authored-by: Matthew Turk <matthewturk@gmail.com>

Author: mabruzzo

yt/frontends/cholla/data_structures.py

@@ -139,9 +139,9 @@ def _parse_index(self):
                 filename=fname,
             )
 
-            self.grid_left_edge[i] = left_frac
-            self.grid_right_edge[i] = right_frac
-            self.grid_dimensions[i] = dims_local
+            self.grid_left_edge[i,:] = left_frac
+            self.grid_right_edge[i,:] = right_frac
+            self.grid_dimensions[i,:] = dims_local
             self.grid_levels[i, 0] = level
             self.grid_particle_count[i, 0] = 0