Update indentation.md to fix a typo (scala#23505)

bingchen-li · tgodzik · commit bd6b186c38d0 · 2025-07-23T14:57:09.000+02:00
Closes scala#23492 [Cherry-picked 26d1794]
diff --git a/docs/_docs/reference/other-new-features/indentation.md b/docs/_docs/reference/other-new-features/indentation.md
@@ -189,7 +189,7 @@ Define for an arbitrary sequence of tokens or non-terminals `TS`:
 
 ```ebnf
 :<<< TS >>>   ::=   ‘{’ TS ‘}’
-                |   <colon> <indent" TS <outdent>
+                |   <colon> <indent> TS <outdent>
 ```
 Then the grammar changes as follows:
 ```ebnf
