Fix examples

examples/beam_combine_test.rs

@@ -26,7 +26,7 @@ fn main() -> Result<(), OpossumError> {
             spectrum: create_nd_glass_spectrum(1.0),
         })),
     );
-    let i_bs = scenery.add_element("Beam splitter", BeamSplitter::new(0.5));
+    let i_bs = scenery.add_element("Beam splitter", BeamSplitter::new(0.5).unwrap());
     let filter_spectrum = Spectrum::from_csv("NE03B.csv")?;
     let i_f = scenery.add_element(
         "Filter",

examples/filter_test.rs

@@ -20,7 +20,7 @@ fn main() -> Result<(), OpossumError> {
             spectrum: create_he_ne_spectrum(1.0),
         })),
     );
-    let i_bs = scenery.add_element("Beam splitter", BeamSplitter::new(0.6));
+    let i_bs = scenery.add_element("Beam splitter", BeamSplitter::new(0.6).unwrap());
     let filter_spectrum = Spectrum::from_csv("NE03B.csv")?;
     let i_f = scenery.add_element(
         "Filter",