place full stop after \exRef footnote

layout.sty

@@ -202,7 +202,7 @@ bookmarks=true]%
 % Argument 2: What to call that directory (e.g. 'the core rules')
 % Argument 3: Which label you're referring to
 \newcommand\exRef[3]{%
-\iftoggle{#1}{\footnote{See the book of \textit{\MakeUppercase#2}, \autopageref{#3} --- \nameref{#3}}}%
+\iftoggle{#1}{\footnote{See the book of \textit{\MakeUppercase#2}, \autopageref{#3} --- \nameref{#3}.}}%
 {}%
 }