Merge pull request #4368 from swaggerexpert/char0n/runtime-expressions

Editorial change: fix typo in runtime expression CHAR non-terminal

Author: lornajane

src/oas.md

@@ -2513,7 +2513,7 @@ The runtime expression is defined by the following [ABNF](https://tools.ietf.org
           / "^" / "_" / "`" / "|" / "~" / DIGIT / ALPHA
 ```
 
-Here, `json-pointer` is taken from [RFC6901](https://tools.ietf.org/html/rfc6901), `char` from [RFC7159](https://tools.ietf.org/html/rfc7159#section-7) and `token` from [RFC7230](https://tools.ietf.org/html/rfc7230#section-3.2.6).
+Here, `json-pointer` is taken from [RFC6901](https://tools.ietf.org/html/rfc6901), `CHAR` from [RFC7159](https://tools.ietf.org/html/rfc7159#section-7) and `token` from [RFC7230](https://tools.ietf.org/html/rfc7230#section-3.2.6).
 
 The `name` identifier is case-sensitive, whereas `token` is not.