tokens.md: typo fixes (addition -> edition)
diff --git a/src/tokens.md b/src/tokens.md
index 15c82a1..1a87551 100644
--- a/src/tokens.md
+++ b/src/tokens.md
@@ -469,7 +469,7 @@
r[lex.token.str-c.edition2021]
> [!EDITION-2021]
-> C string literals are accepted in the 2021 edition or later. In earlier additions the token `c""` is lexed as `c ""`.
+> C string literals are accepted in the 2021 edition or later. In earlier editions the token `c""` is lexed as `c ""`.
r[lex.token.str-c-raw]
#### Raw C string literals
@@ -501,7 +501,7 @@
r[lex.token.str-c-raw.edition2021]
> [!EDITION-2021]
-> Raw C string literals are accepted in the 2021 edition or later. In earlier additions the token `cr""` is lexed as `cr ""`, and `cr#""#` is lexed as `cr #""#` (which is non-grammatical).
+> Raw C string literals are accepted in the 2021 edition or later. In earlier editions the token `cr""` is lexed as `cr ""`, and `cr#""#` is lexed as `cr #""#` (which is non-grammatical).
#### Examples for C string and raw C string literals
@@ -791,7 +791,7 @@
r[lex.token.life.raw.edition2021]
> [!EDITION-2021]
-> Raw lifetimes are accepted in the 2021 edition or later. In earlier additions the token `'r#lt` is lexed as `'r # lt`.
+> Raw lifetimes are accepted in the 2021 edition or later. In earlier editions the token `'r#lt` is lexed as `'r # lt`.
r[lex.token.punct]
## Punctuation
