Fix changelog by moving bug fix to proper section.

PiperOrigin-RevId: 668435872
Change-Id: I9042eb3f119cc778675944e7cfb8f6be0e9379b2

doc/changelog.rst

@@ -25,8 +25,6 @@ General
   parent model, but only on the first attachment.
 - Added the :ref:`mjtSameFrame` enum which contains the possible frame alignments of bodies and their children. These
   alignments are used as shortcuts in :ref:`mj_kinematics`.
-- Fixed a bug in tendon wrapping around spheres. Before this fix, tendons that wrapped around spheres with an
-  externally-placed :ref:`sidesite<spatial-geom-sidesite>` could jump inside the sphere instead of wrapping around it.
 
 MJX
 ^^^
@@ -47,6 +45,8 @@ Bug fixes
   contribution by :github:user:`michael-ahn`).
 - Fixed a bug wherein, for models that have both muscles and stateless actuators and used one of the implicit
   integrators, wrong derivatives would be computed.
+- Fixed a bug in tendon wrapping around spheres. Before this fix, tendons that wrapped around spheres with an
+  externally-placed :ref:`sidesite<spatial-geom-sidesite>` could jump inside the sphere instead of wrapping around it.
 
 Python bindings
 ^^^^^^^^^^^^^^^

test/engine/engine_util_misc_test.cc

@@ -132,6 +132,7 @@ TEST_F(UtilMiscTest, SphereWrap) {
   mj_forward(model, data);
   mjtNum ten_length1 = data->sensordata[0];
 
+  // difference should be small
   mjtNum diff = ten_length1 - ten_length0;
   EXPECT_LT(mju_abs(diff), 1e-3);