fix typo of README.md (#10605)

diff --git a/grammars/README.md b/grammars/README.md
index 4e57bca5f300bebb3528a08a19174199ff026e04..9769540919f98d972b6644b55e1ca81ce323cb2c 100644 (file)
--- a/grammars/README.md
+++ b/grammars/README.md
@@ -46,7 +46,7 @@ Terminals support the full range of Unicode. Unicode characters can be specified
 
 Character ranges can be negated with `^`:
 ```
-single-line ::= [^\n]+ "\n"`
+single-line ::= [^\n]+ "\n"
 ```
 
 ## Sequences and Alternatives