Small improvements to the Numbers page

[zamulla]

No description provided.

[sarahhaggarty]

The examples are looking much better! Thanks!
I have mostly minor comments about coding style and wording. Please take a look 🙏

[sarahhaggarty]

Nice work!
Just a few minor comments for you to consider 🙏

[AlexanderPrendota]

Bad samples
Snippets:
File: docs/topics/numbers.md

fun main() {
//sampleStart
    val x = 5L / 2
    println (x == 2)
    // Error, as Long (x) cannot be compared to Int (2)
    
    println(x == 2L)
    // true
//sampleEnd
}

(3:13, 3:19) ERROR Operator '==' cannot be applied to 'kotlin.Long' and 'kotlin.Int'.

---

[AlexanderPrendota]

Bad samples
Snippets:
File: docs/topics/numbers.md

fun main() {
//sampleStart
    val x = 5L / 2
    println (x == 2)
    // Error, as Long (x) cannot be compared to Int (2)
    
    println(x == 2L)
    // true
//sampleEnd
}

(3:13, 3:19) ERROR Operator '==' cannot be applied to 'kotlin.Long' and 'kotlin.Int'.

---