Update documentation

include/testlib.hpp

@@ -8,7 +8,7 @@
  *  @brief A small test library.
  *
  *  @details This a small testing library that is tailored for the needs of the
- *  project. Anything that is in the details namespace should not be used 
+ *  project. Anything that is in the details namespace should not be used
  *  directly, or else it might cause undefined behavior if not used correctly.
  *
  *  @bug No known bugs
@@ -32,6 +32,7 @@
     details::m_assert(expr, #expr, __METHOD_NAME__, __FILE__, __LINE__, msg)
 
 namespace details {
+
 /** @brief Test an expression, confirm that test is ok, or abort execution.
  *
  *  @details This function takes in an expression and prints an OK message if
@@ -49,6 +50,7 @@ void m_assert(bool expr, std::string expr_str, std::string func,
 } // namespace details
 
 namespace testlib {
+
 /** @brief Test if two armadillo matrices/vectors are close to each other.
  *
  *  @details This function takes in 2 matrices/vectors and checks if they are