Fix capitalization issues

Fixes bug 444
https://github.com/hendricius/the-sourdough-framework/issues/444

Reformat paragraphs to 80 colmuns while at it.

book/sourdough-starter/sourdough-starter-types.tex

@@ -225,9 +225,10 @@ mixing the starter there should be no chunks of flour left. Test placing
 the starter on your kitchen counter. When lifting it should slightly stick
 to your counter's surface. This test indicates that you hydrated the flour sufficiently.
 When the mixture is too dry, the fermentation speed is greatly reduced and
-the starter will seem inactive. The starter should be much drier
-than a regular starter, but also not too dry. Refer to figure~\ref{fig:stiff-starter-dry-check}
-for a visual example of the starter's required hydration level.
+the starter will seem inactive. The starter should be much drier than a
+regular starter, but also not too dry. Refer to
+Figure~\ref{fig:stiff-starter-dry-check} for a visual example of the starter's
+required hydration level.
 
 \begin{figure}[!htb]
   \includegraphics[width=\textwidth]{stiff-starter-dry-check.jpg}