doc/tutorials/basic: update numbers.md

example must fit description of example

Closes #73
cuelang/cue#73

GitOrigin-RevId: 968fc1570fbfdd4490e492761f3be74fb81fc73d
Change-Id: I41d3b0b0e05bf9fc0ce75d33c01cc96959f2ec5d
Reviewed-on: https://cue-review.googlesource.com/c/cue/+/2867
Reviewed-by: Marcel van Lohuizen <[email protected]>

Author: noelmcloughlin

doc/tutorial/basics/numbers.md

@@ -21,7 +21,7 @@ a: int
 a: 4 // type int
 
 b: number
-b: 4 // type float
+b: 4.0 // type float
 
 c: int
 c: 4.0
@@ -33,7 +33,7 @@ d: 4  // will evaluate to type int (default)
 `$ cue eval -i numbers.cue`
 ```
 a: 4
-b: 4
+b: 4.0
 c: _|_ /* conflicting values int and 4.0 (mismatched types int and float) */
 d: 4
-```
+```