Fix an alignment issue in Summary::FullReport

Change-Id: If5f93aee46f056b4019de19e372988e827ff4ef5

internal/ceres/solver.cc

diff --git a/internal/ceres/solver.cc b/internal/ceres/solver.cc
index 705364b..b4896c4 100644
--- a/internal/ceres/solver.cc
+++ b/internal/ceres/solver.cc
@@ -875,7 +875,7 @@
   StringAppendF(&report, "  Jacobian evaluation %23.4f\n",
                 jacobian_evaluation_time_in_seconds);
   if (line_search_used) {
-    StringAppendF(&report, "    Line search gradient evaluation    %6.4f\n",
+    StringAppendF(&report, "    Line search gradient evaluation   %6.4f\n",
                   line_search_gradient_evaluation_time_in_seconds);
   }