STY: Apply a couple refurb suggestions (#3151)

I selected only a couple of suggestions that make sense:
* [FURB123]: Replace `bool(x)` with `x`
* [FURB109]: Replace `in [x, y, z]` with `in (x, y, z)`

Author: DimitriPapadopoulos

fmriprep/interfaces/workbench.py

@@ -279,7 +279,7 @@ class MetricResample(WBCommand, OpenMPCommandMixin):
     _cmd = "wb_command -metric-resample"
 
     def _format_arg(self, opt, spec, val):
-        if opt in ["current_area", "new_area"]:
+        if opt in ("current_area", "new_area"):
             if not self.inputs.area_surfs and not self.inputs.area_metrics:
                 raise ValueError(
                     "{} was set but neither area_surfs or" " area_metrics were set".format(opt)

fmriprep/workflows/bold/outputs.py

@@ -116,7 +116,7 @@ def prepare_timing_parameters(metadata: dict):
     slice_timing = timing_parameters.pop("SliceTiming", [])
 
     run_stc = len(slice_timing) > 1 and 'slicetiming' not in config.workflow.ignore
-    timing_parameters["SliceTimingCorrected"] = bool(run_stc)
+    timing_parameters["SliceTimingCorrected"] = run_stc
 
     if len(slice_timing) > 1:
         st = sorted(slice_timing)