fix cosh test

Author: RalfJung

src/tools/miri/tests/pass/float.rs

@@ -1179,7 +1179,7 @@ pub fn libm() {
     assert_biteq(1.0f32.acos(), 0.0, "acos(1) = 0");
     assert_biteq(1.0f64.acos(), 0.0, "acos(1) = 0");
 
-    assert_approx_eq!(1.0f32.cosh(), 1.54308f32);
+    assert_approx_eq!(1.0f32.cosh(), 1.5430806f32);
     assert_approx_eq!(1.0f64.cosh(), 1.5430806348152437f64);
     assert_eq!(0.0f32.cosh(), 1.0);
     assert_eq!(0.0f64.cosh(), 1.0);