Use HTTP/1.1 instead of HTTP/1.0 in examples in the manual?

Checked when looking at https://github.com/php/doc-en/pull/709 - there's also event/ but I'm not familiar with that

Users may be surprised if they add headers to those examples and those headers only exist in HTTP/1.1.

For stream/book.xml - is it actually using HTTP/1.0 or HTTP/1.1 - maybe there should be a changelog (I forget if that or something else was what changed in 8.0)

NOTE: HTTP/1.0 may actually be faster for some of the examples due to not supporting keepalive if the server closes connections (no keepalive in 1.0) - Connection: close may need to be added to ensure the same behavior

stream/examples.xml
49:fwrite($sock, "POST /form_action.php HTTP/1.0\r\n");

stream/functions/stream-socket-client.xml
156:    fwrite($fp, "GET / HTTP/1.0\r\nHost: www.example.com\r\nAccept: */*\r\n\r\n");

stream/book.xml
21-    A <literal>wrapper</literal> is additional code which tells the stream how to handle
22-    specific protocols/encodings.  For example, the <literal>http</literal>
23:    wrapper knows how to translate a URL into an <literal>HTTP/1.0</literal>
24-    request for a file on a remote server.  There are many wrappers
25-    built into PHP by default (See <xref linkend="wrappers"/>),
26-    and additional, custom wrappers may be added either within a
27-    PHP script using <function>stream_wrapper_register</function>,

stream/functions/stream-set-timeout.xml
81:    fwrite($fp, "GET / HTTP/1.0\r\n\r\n");

network/functions/header.xml
73://    (to override http status messages for clients that are still using HTTP/1.0)

Start by reviewing the HTTP/1.0 references in stream/examples.xml, stream/functions/stream-socket-client.xml, stream/book.xml, stream/functions/stream-set-timeout.xml, and network/functions/header.xml. Verify the documented stream behavior and whether the examples should use HTTP/1.1 or explicitly close connections. Done means the affected examples and explanatory text consistently reflect the confirmed behavior, with a changelog entry if the behavior changed in PHP 8.0.