Update http_client.rst

notice about passing accept-encoding variable manually

Author: stipic

http_client.rst

@@ -1051,6 +1051,9 @@ To disable HTTP compression, send an ``Accept-Encoding: identity`` HTTP header.
 Chunked transfer encoding is enabled automatically if both your PHP runtime and
 the remote server supports it.
 
+.. caution::
+    Symfony automatically adds the `Accept-Encoding: gzip` HTTP header if certain requirements are met. However, be aware that if you manually set `Accept-Encoding` to `gzip`, you will need to handle the decompression yourself.
+
 HTTP/2 Support
 ~~~~~~~~~~~~~~