doc: enchane string3 exercise hint

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yapjiahong 2024-07-17 00:43:42 +08:00
parent 362473dde0
commit 2c79e29483

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@ -498,7 +498,11 @@ some of them:
https://doc.rust-lang.org/std/string/struct.String.html#method.trim
For the `compose_me` method: You can either use the `format!` macro, or convert
the string slice into an owned string, which you can then freely extend."""
the string slice into an owned string, which you can then freely extend.
For the `replace_me` method: You can reference:
https://doc.rust-lang.org/std/string/struct.String.html#method.replace
"""
[[exercises]]
name = "strings4"