update docstring

Author: papachap

src/compas/geometry/brep/brep.py

@@ -923,6 +923,11 @@ def make_solid(self):
         -------
         None
 
+        Raises
+        ------
+        :class:`~compas.geometry.BrepInvalidError`
+            If the operation fails.
+
         """
         raise NotImplementedError