Fix example wording (#2206)

* Update numerictypes.md

Precision was off

* Update numerictypes.md

docs/_pages/numerictypes.md

@@ -43,7 +43,7 @@ float value = 3.1415927F;
 value.Should().BeApproximately(3.14F, 0.01F);
 ```
 
-This will verify that the value of the float is between 3.139 and 3.141.
+This will verify that the value of the float is between 3.13 and 3.15.
 
 Conversely, to assert that the value differs by an amount, you can do this.