Merge pull request #1157 from mikong/fix-grammar-section-2-1

Fix grammar in sentence about integer notation

src/primitives/literals.md

@@ -4,7 +4,7 @@ Integers `1`, floats `1.2`, characters `'a'`, strings `"abc"`, booleans `true`
 and the unit type `()` can be expressed using literals.
 
 Integers can, alternatively, be expressed using hexadecimal, octal or binary
-notation using either of these prefixes: `0x`, `0o` or `0b`.
+notation using these prefixes respectively: `0x`, `0o` or `0b`.
 
 Underscores can be inserted in numeric literals to improve readability, e.g.
 `1_000` is the same as `1000`, and `0.000_001` is the same as `0.000001`.