fixed typo

Co-authored-by: Pete Gadomski <[email protected]>

Author: jonas-hurst

pystac/extensions/mlm.py

@@ -1608,7 +1608,7 @@ def accelerator(self, v: AcceleratorType | None) -> None:
     @property
     def accelerator_constrained(self) -> bool | None:
         """
-        Get or set the accelerator_constrianed property
+        Get or set the accelerator_constrained property
         """
         return self._get_property(ACCELERATOR_CONSTRAINED_PROP, bool)