source typo fixes pt2 (only on py3 merged code)

src/Mod/Import/App/SCL/ConstructedDataTypes.py

@@ -127,7 +127,7 @@ class SELECT(object):
 
     def get_allowed_basic_types(self):
         ''' if a select contains some subselect, goes down through the different
-        sublayers untill there is no more '''
+        sublayers until there is no more '''
         b = []
         _auth_types = self.get_allowed_types()
         for _auth_type in _auth_types:

src/Mod/Import/App/SCL/Part21.py

@@ -130,7 +130,7 @@ class Part21Parser:
             line = fp.readline()
             if not line:
                 break
-            # there may be a multline definition. In this case, we read lines untill we found
+            # there may be a multline definition. In this case, we read lines until we found
             # a ;
             while (line.find(';') == -1): #its a multiline
                 line = line.replace("\n","").replace("\r","") + fp.readline()