fix more naming and docstrings

Author: dmarek-flex

tests/test_components/test_microwave.py

@@ -40,7 +40,7 @@
 
 MAKE_PLOTS = True
 if MAKE_PLOTS:
-    # Interative plotting for debugging
+    # Interactive plotting for debugging
     from matplotlib import use
 
     use("TkAgg")

tidy3d/components/microwave/path_integrals/path_integral_factory.py

@@ -91,14 +91,14 @@ def make_path_integrals(
 
     Parameters
     ----------
-    impedance_spec : ImpedanceSpecTypes
-        Impedance specification for creating voltage and current path specifications.
+    microwave_mode_spec : MicrowaveModeSpec
+        Microwave mode specification for creating voltage and current path specifications.
     monitor : Union[ModeMonitor, ModeSolverMonitor]
         The monitor for which the path integrals are being generated.
 
     Returns
     -------
-    tuple[tuple[VoltageIntegralTypes], tuple[CurrentIntegralTypes]]
+    tuple[tuple[Optional[VoltageIntegralTypes]], tuple[Optional[CurrentIntegralTypes]]]
         Tuple containing the voltage and current path integral instances for each mode.
 
     Raises