README example of compileCharacterSet()

Author: fluentfuture

dot-parse/README.md

@@ -107,8 +107,8 @@ The final `.not()` corresponds to the caret (`^`) character.
 
 To parse the character set string, there are two types of primitives:
 
-1. Range, like `a-z`, `0-9`.
-2. Literal character, like `abc` (3 literal characters), or `-_` (literal hyphen and literal underscore).
+1. Ranges, like `a-z`, `0-9`.
+2. Literal characters, like `abc` (3 literal characters), or `-_` (literal hyphen and literal underscore).
 
 A character set is a list of these two types of primitives. And optionally a caret (`^`) at the beginning
 indicates negation.