Reformat documentation without latex

This is much more readable in the code, and still looks good in doxygen.

Author: romainbrenguier

src/solvers/refinement/string_constraint_generator_testing.cpp

@@ -19,16 +19,16 @@ Author: Romain Brenguier, romain.brenguier@diffblue.com
 /// second one, starting at position offset.
 ///
 /// These axioms are:
-///   1. \f$ {\tt isprefix} \Rightarrow {\tt offset_within_bounds}\f$
-///   2. \f$ \forall 0 \le qvar<|{\tt prefix}|.\ {\tt isprefix}
-///          \Rightarrow s0[qvar+{\tt offset}]=s2[qvar] \f$
-///   3. \f$ (\lnot {\tt isprefix} \Rightarrow
-///          \lnot {\tt offset_within_bounds}
-///          \lor (0 \le witness<|{\tt prefix}|
-///          \land {\tt str}[witness+{\tt offset}] \ne {\tt prefix}[witness])\f$
-/// where  \f$ {\tt offset_within_bounds} \f$ is
-///    \f$ offset \ge 0 \land offset \le |str| \land
-///        |str| - offset \ge |{\tt prefix}| \f$
+///   1. isprefix => offset_within_bounds
+///   2. forall qvar in [0, |prefix|).
+///          isprefix => str[qvar + offset] = prefix[qvar]
+///   3. !isprefix => !offset_within_bounds
+///                   || 0 <= witness < |prefix|
+///                      && str[witness+offset] != prefix[witness]
+///
+/// where offset_within_bounds is:
+///     offset >= 0 && offset <= |str| && |str| - offset >= |prefix|
+///
 /// \param prefix: an array of characters
 /// \param str: an array of characters
 /// \param offset: an integer