Fix alignment of the assignment key in example documents

example/mu/example.dtx

@@ -133,7 +133,7 @@
     %% 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,
+%    assignment         = assignment.pdf,
     %% The following keys are only useful, when you're using a
     %% locale other than English. You can safely omit them in an
     %% English thesis.
@@ -175,7 +175,7 @@
     %% 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,
+%    assignment    = assignment.pdf,
 }
 %</fi>
 %<*fsps>
@@ -444,7 +444,7 @@
     %% 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,
+%    assignment    = assignment.pdf,
 }
 %</sci>
 \usepackage{makeidx}      %% The `makeidx` package contains