Fix various typos and whitespace

src/Mod/Part/App/ExtrusionHelper.cpp

@@ -362,7 +362,7 @@ void ExtrusionHelper::checkInnerWires(std::vector<bool>& isInnerWire, const gp_D
         }
         if (saveIsInnerWireIterator == *isInnerWireIterator)
             // nothing was changed and we can remove it from the list to be checked
-            // but we cannot do this before the foor loop was fully run
+            // but we cannot do this before the for loop was fully run
             toDisable[outer] = true;
         ++isInnerWireIterator;
         ++toCheckIterator;

src/Mod/Part/Gui/DlgFilletEdges.cpp

@@ -635,7 +635,7 @@ void DlgFilletEdges::setupFillet(const std::vector<App::DocumentObject*>& objs)
           * will do the check
           *
         // If sub-objects are already selected then only add the un-selected parts.
-        // This is impotant to avoid recursive calls of rmvSelection() which
+        // This is important to avoid recursive calls of rmvSelection() which
         // invalidates the internal iterator (#0002200).
         if (selIt != selObj.end()) {
             std::vector<std::string> selElements = selIt->getSubNames();

src/Mod/Part/parttests/TopoShapeListTest.py

@@ -48,14 +48,14 @@ class TopoShapeListTest(unittest.TestCase):
         self.assertLessEqual(error, maxError, "TopoShapeList entry 1 has wrong volume: {0}".format(boxes[1].Volume))
         error = abs(3.0 - boxes[2].Volume)
         self.assertLessEqual(error, maxError, "TopoShapeList entry 2 has wrong volume: {0}".format(boxes[2].Volume))
-        
+
         twoboxes = [boxes[1], boxes[2]]
         doc.openTransaction("Change shapes")
         obj.Shapes = twoboxes
-        doc.commitTransaction()       
+        doc.commitTransaction()
         self.assertEqual(len(obj.Shapes), 2, "TopoShapeList has wrong entry count (1): {0}".format(len(obj.Shapes)))
 
         doc.undo()
-        
+
         self.assertEqual(len(obj.Shapes), 3, "TopoShapeList has wrong entry count (2): {0}".format(len(obj.Shapes)))