Revert "Wibble."

This reverts commit e7ca132.

README.md

@@ -68,7 +68,7 @@ dblatex.
 (NB: **Do you have multiple cores? Be sure to tell that to `make`!** This can
 save you hours of build time depending on your system configuration, and is
 almost always a win regardless of how many cores you have. As a simple rule,
-you should have about N+1 jobs, where `N` is the amount of cores you have.)
+you should have about `N`+1 jobs, where `N` is the amount of cores you have.)
 
 The `perl boot` step is only necessary if this is a tree checked out
 from git.  For source distributions downloaded from [GHC's web site] [1],