LaTeX template: Fix subtitle spacing (#5244)

The `\large` command does not reset the spacing without adding `\par` to the end, which caused `\subtitle` to use the same line spacing as `\title`.

data/templates/default.latex

@@ -354,7 +354,7 @@ $else$
 \usepackage{etoolbox}
 \makeatletter
 \providecommand{\subtitle}[1]{% add subtitle to \maketitle
-  \apptocmd{\@title}{\par {\large #1}}{}{}
+  \apptocmd{\@title}{\par {\large #1 \par}}{}{}
 }
 \makeatother
 $endif$