idstr: Fix docs of set_static_str_with_len()
The passed string must be NUL-terminated because otherwise a copy would be necessary to make it NUL-terminated, which defeats the whole purpose of the set_static() functions.
CC @fengalin
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The passed string must be NUL-terminated because otherwise a copy would be necessary to make it NUL-terminated, which defeats the whole purpose of the set_static() functions.
CC @fengalin