Definition not title.

The summary of metadata was printing the title twice: once where its
meant to be, and once for the definition when really the definition
should've been printed.

sasdata/metadata.py

@@ -397,8 +397,8 @@ def summary(self):
             "  " + "="*len(self.title) +
                            "=======" +
             "="*len(self.run) + "\n\n" +
-            f"Definition: {self.title}\n" +
+            f"Definition: {self.definition}\n" +
             self.process.summary() +
             self.sample.summary() +
             self.instrument.summary() +
-            self.transmission_spectrum.summary())
+            self.transmission_spectrum.summary())