doc: curl_mime_init() strong easy handle binding has been relaxed in 7.87.0

Reported-by: Chloe Kudryavtsev
Fixes curl#10834
Closes curl#10835

Author: monnerat

docs/libcurl/curl_mime_init.3

@@ -31,14 +31,14 @@ curl_mime_init - create a mime handle
 curl_mime *curl_mime_init(CURL *easy_handle);
 .fi
 .SH DESCRIPTION
-\fIcurl_mime_init(3)\fP creates a handle to a new empty mime structure,
+\fIcurl_mime_init(3)\fP creates a handle to a new empty mime structure.
 This mime structure can be subsequently filled using the mime API, then
 attached to some easy handle using option \fICURLOPT_MIMEPOST(3)\fP within
 a \fIcurl_easy_setopt(3)\fP call or added as a multipart in another mime
 handle's part using \fIcurl_mime_subparts(3)\fP.
 
 \fIeasy_handle\fP is used for part separator randomization and error
-reporting. It does not need to be the final target handle.
+reporting. Since 7.87.0, it does not need to be the final target handle.
 
 Using a mime handle is the recommended way to post an HTTP form, format and
 send a multi-part email with SMTP or upload such an email to an IMAP server.