Missing 9 for hexadecimal-digit

Author: Ivecia

docs/c-language/lexical-grammar.md

@@ -114,7 +114,7 @@ For a list of additional Microsoft-specific keywords, see [C keywords](./c-keywo
  **`0`** **`1`** **`2`** **`3`** **`4`** **`5`** **`6`** **`7`**
 
 *`hexadecimal-digit`*: one of\
- **`0`** **`1`** **`2`** **`3`** **`4`** **`5`** **`6`** **`7`** **`8`**\
+ **`0`** **`1`** **`2`** **`3`** **`4`** **`5`** **`6`** **`7`** **`8`** **`9`**\
  **`a`** **`b`** **`c`** **`d`** **`e`** **`f`**\
  **`A`** **`B`** **`C`** **`D`** **`E`** **`F`**