Fix some markup breakage that prevented formatting; re-wrapped a couple of

wide paragraphs.

Doc/lib/librandom.tex

@@ -70,16 +70,16 @@ def create_generators(num, delta, firstseed=None):
 gens = create_generators(10, 1000000)
 \end{verbatim}
 
-That creates 10 distinct generators, which can be passed out to 10 distinct
-threads.  The generators don't share state so can be called safely in
-parallel.  So long as no thread calls its \code{g.random()} more than a
-million times (the second argument to \function{create_generators), the
-sequences seen by each thread will not overlap.  The period of the
-underlying Wichmann-Hill generator limits how far this technique can be
-pushed.
+That creates 10 distinct generators, which can be passed out to 10
+distinct threads.  The generators don't share state so can be called
+safely in parallel.  So long as no thread calls its \code{g.random()}
+more than a million times (the second argument to
+\function{create_generators()}, the sequences seen by each thread will
+not overlap.  The period of the underlying Wichmann-Hill generator
+limits how far this technique can be pushed.
 
-Just for fun, note that since we know the period, \method{jumpahead()} can
-also be used to "move backward in time":
+Just for fun, note that since we know the period, \method{jumpahead()}
+can also be used to ``move backward in time:''
 
 \begin{verbatim}
 >>> g = Random(42)  # arbitrary
@@ -100,7 +100,7 @@ Bookkeeping functions:
   current system time is also used to initialize the generator when the
   module is first imported.
   If \var(x) is not \code{None} or an int or long,
-  \code{hash(\var{x})) is used instead.
+  \code{hash(\var{x})} is used instead.
   If \var{x} is an int or long, \var{x} is used directly.
   Distinct values between 0 and 27814431486575L inclusive are guaranteed
   to yield distinct internal states (this guarantee is specific to the