Fix codespell errors in comments

Author: CPBridge

src/highdicom/_module_utils.py

@@ -85,7 +85,7 @@ def check_required_attributes(
         AttributeTypeValues.REQUIRED_EMPTY_IF_UNKNOWN
     ]
 
-    # Construct tree once and re-use in all recursive calls
+    # Construct tree once and reuse in all recursive calls
     tree = construct_module_tree(module)
 
     if base_path is not None:

src/highdicom/seg/sop.py

@@ -1573,7 +1573,7 @@ def __init__(
                 planes = planes.astype(np.uint8)
                 # It may happen that a boolean array is passed that should be
                 # interpreted as fractional segmentation type. In this case, we
-                # also need to stretch pixel valeus to 8-bit unsigned integer
+                # also need to stretch pixel values to 8-bit unsigned integer
                 # range by multiplying with the maximum fractional value.
                 if segmentation_type == SegmentationTypeValues.FRACTIONAL:
                     planes *= int(self.MaximumFractionalValue)