Cleanup: use '#' prefix for issues instead of 'T'

Match the convention from Gitea instead of Phabricator's T for tasks.

source/blender/python/mathutils/mathutils_Vector.c

@@ -2696,7 +2696,7 @@ static int Vector_swizzle_set(VectorObject *self, PyObject *value, void *closure
   swizzleClosure = POINTER_AS_INT(closure);
 
   /* We must first copy current vec into tvec, else some org values may be lost.
-   * See T31760.
+   * See #31760.
    * Assuming self->vec_num can't be higher than MAX_DIMENSIONS! */
   memcpy(tvec, self->vec, self->vec_num * sizeof(float));
 
@@ -2708,7 +2708,7 @@ static int Vector_swizzle_set(VectorObject *self, PyObject *value, void *closure
   }
 
   /* We must copy back the whole tvec into vec, else some changes may be lost (e.g. xz...).
-   * See T31760. */
+   * See #31760. */
   memcpy(self->vec, tvec, self->vec_num * sizeof(float));
   /* continue with BaseMathObject_WriteCallback at the end */