docs(latex): format title level 5 (paragraph)

Refs #656

docs/latex/cassiopee_preamble.tex

@@ -58,3 +58,8 @@
 \newunicodechar{ϵ}{\ensuremath{\in}}
 \newunicodechar{↵}{\ensuremath{\hookleftarrow}}
 \newunicodechar{≤}{\ensuremath{\leq}}
+
+\titleformat{\paragraph}
+	[block]
+	{\bfseries\sffamily\raggedright}
+	{\theparagraph}{0.5em}{}