Example document for `mu/sci` now includes the `assignment` key.

example/mu/example.dtx

@@ -391,6 +391,10 @@
     keywordsEn    = {keyword1, keyword2, ...},
     TeXkeywordsEn = {keyword1, keyword2, \ldots},
     bib           = example.bib,
+    %% Uncomment the following line (by removing the % symbol at
+    %% the beginning) and replace `assignment.pdf` with the
+    %% filename of your scanned thesis assignment.
+    % assignment    = assignment.pdf
 }
 \thesislong{abstract}{
     This is the abstract of my thesis, which can